Redirect user to wp-admin when a site has the “Classic style” after the /hosting flow purchase

[paulopmt1]

Related to: pet6gk-1yJ-p2#redirect-to-wp-admin

Proposed Changes

• Sites created in the "Classic style" should redirect to their /wp-admin instead of Calypso home

Testing Instructions

• Create a new site from the /hosting flow and make sure it redirects to /wp-admin interface.
  Here's the hosting flow, local URL: http://calypso.localhost:3000/setup/new-hosted-site/plans?ref=hosting-lp&section=hero

Pre-merge Checklist

• Has the general commit checklist been followed? (PCYsg-hS-p2)
• Have you written new tests for your changes?
• Have you tested the feature in Simple (P9HQHe-k8-p2), Atomic (P9HQHe-jW-p2), and self-hosted Jetpack sites (PCYsg-g6b-p2)?
• Have you checked for TypeScript, React or other console errors?
• Have you used memoizing on expensive computations? More info in Memoizing with create-selector and Using memoizing selectors and Our Approach to Data
• Have we added the "[Status] String Freeze" label as soon as any new strings were ready for translation (p4TIVU-5Jq-p2)?
• For changes affecting Jetpack: Have we added the "[Status] Needs Privacy Updates" label if this pull request changes what data or activity we track or use (p4TIVU-aUh-p2)?

[github-actions]

Calypso Live (direct link)

https://calypso.live?image=registry.a8c.com/calypso/app:build-119803

Jetpack Cloud live (direct link)

https://calypso.live?image=registry.a8c.com/calypso/app:build-119803&env=jetpack

Automattic for Agencies live (direct link)

https://calypso.live?image=registry.a8c.com/calypso/app:build-119803&env=a8c-for-agencies

[matticbot]

Here is how your PR affects size of JS and CSS bundles shipped to the user's browser:

App Entrypoints (~72 bytes added 📈 [gzipped])

name                   parsed_size           gzip_size
entry-stepper               +517 B  (+0.0%)     +118 B  (+0.0%)
entry-subscriptions         +498 B  (+0.0%)     +123 B  (+0.0%)
entry-login                 +498 B  (+0.0%)     +123 B  (+0.0%)
entry-domains-landing       +498 B  (+0.1%)     +123 B  (+0.1%)
entry-browsehappy           +498 B  (+0.2%)     +123 B  (+0.2%)
entry-main                  +301 B  (+0.0%)      +77 B  (+0.0%)

Common code that is always downloaded and parsed every time the app is loaded, no matter which route is used.

Sections (~6275 bytes added 📈 [gzipped])

name                               parsed_size            gzip_size
transferring-hosted-site-flow         +30564 B  (+50.9%)    +9193 B  (+45.1%)
jetpack-cloud-overview                  +304 B   (+0.1%)     +892 B   (+0.7%)
jetpack-cloud                           +211 B   (+0.1%)     +126 B   (+0.1%)
woocommerce-installation                +108 B   (+0.0%)      +39 B   (+0.0%)
woocommerce                             +108 B   (+0.0%)      +39 B   (+0.0%)
with-theme-assembler-flow               -108 B   (-0.2%)      -37 B   (-0.3%)
update-options-flow                     -108 B   (-0.2%)      -36 B   (-0.6%)
update-design-flow                      -108 B   (-0.0%)      -36 B   (-0.0%)
trial-wooexpress-flow                   -108 B   (-0.2%)      -38 B   (-0.5%)
themes                                  +108 B   (+0.0%)      +42 B   (+0.0%)
theme                                   +108 B   (+0.0%)      +42 B   (+0.0%)
tailored-ecommerce-flow                 -108 B   (-0.2%)      -37 B   (-0.5%)
subscribers                             +108 B   (+0.0%)     +167 B   (+0.1%)
stats                                   +108 B   (+0.0%)      +21 B   (+0.0%)
staging-site                            +108 B   (+0.0%)      +37 B   (+0.0%)
sites-dashboard                         +108 B   (+0.0%)      +37 B   (+0.0%)
site-setup-wg                           -108 B   (-0.1%)      -35 B   (-0.2%)
site-setup-flow                         -108 B   (-0.1%)      -35 B   (-0.2%)
site-purchases                          +108 B   (+0.0%)      +39 B   (+0.0%)
site-performance                        +108 B   (+0.0%)      +37 B   (+0.0%)
site-monitoring                         +108 B   (+0.0%)      +37 B   (+0.0%)
site-migration-flow                     -108 B   (-0.2%)      -37 B   (-0.4%)
site-logs                               +108 B   (+0.0%)      +37 B   (+0.0%)
settings-writing                        +108 B   (+0.0%)      +39 B   (+0.0%)
settings-security                       +108 B   (+0.0%)      +39 B   (+0.0%)
settings-reading                        +108 B   (+0.0%)      +39 B   (+0.0%)
settings-podcast                        +108 B   (+0.0%)      +39 B   (+0.0%)
settings-performance                    +108 B   (+0.0%)      +39 B   (+0.0%)
settings-newsletter                     +108 B   (+0.0%)      +39 B   (+0.0%)
settings-jetpack                        +108 B   (+0.0%)      +39 B   (+0.0%)
settings-discussion                     +108 B   (+0.0%)      +39 B   (+0.0%)
settings                                +108 B   (+0.0%)      +39 B   (+0.0%)
scan                                    +108 B   (+0.0%)      +39 B   (+0.0%)
readymade-template-flow                 -108 B   (-0.1%)      -32 B   (-0.1%)
purchases                               +108 B   (+0.0%)      +39 B   (+0.0%)
promote-post-i2                         +108 B   (+0.0%)      +39 B   (+0.0%)
preview                                 +108 B   (+0.0%)      +39 B   (+0.0%)
posts-custom                            +108 B   (+0.0%)      +38 B   (+0.0%)
posts                                   +108 B   (+0.0%)      +38 B   (+0.0%)
plugins                                 +108 B   (+0.0%)      +37 B   (+0.0%)
plans                                   +108 B   (+0.0%)      +36 B   (+0.0%)
people                                  +108 B   (+0.0%)      +39 B   (+0.0%)
pages                                   +108 B   (+0.0%)      +39 B   (+0.0%)
migration-signup                        -108 B   (-0.2%)      -37 B   (-0.5%)
migration-flow                          -108 B   (-0.1%)      -37 B   (-0.3%)
migrate                                 +108 B   (+0.0%)      +39 B   (+0.0%)
media                                   +108 B   (+0.0%)      +40 B   (+0.0%)
marketplace                             +108 B   (+0.0%)      +32 B   (+0.0%)
marketing                               +108 B   (+0.0%)      +39 B   (+0.0%)
jetpack-social                          +108 B   (+0.0%)      +39 B   (+0.0%)
jetpack-search                          +108 B   (+0.0%)      +39 B   (+0.0%)
jetpack-connect                         +108 B   (+0.0%)      +39 B   (+0.0%)
jetpack-cloud-settings                  +108 B   (+0.0%)      +39 B   (+0.0%)
jetpack-cloud-pricing                   +108 B   (+0.0%)      +39 B   (+0.0%)
jetpack-cloud-plugin-management         +108 B   (+0.0%)      +37 B   (+0.0%)
jetpack-cloud-features-comparison       +108 B   (+0.0%)      +39 B   (+0.0%)
import-flow                             -108 B   (-0.2%)      -37 B   (-0.4%)
import                                  +108 B   (+0.0%)      +36 B   (+0.0%)
hosting-features                        +108 B   (+0.0%)      +37 B   (+0.0%)
hosting                                 +108 B   (+0.0%)      +37 B   (+0.0%)
hosted-site-migration-flow              -108 B   (-0.2%)      -37 B   (-0.4%)
home                                    +108 B   (+0.0%)      +33 B   (+0.0%)
gutenberg-editor                        +108 B   (+0.0%)      +39 B   (+0.0%)
google-my-business                      +108 B   (+0.0%)      +39 B   (+0.0%)
github-deployments                      +108 B   (+0.0%)      +37 B   (+0.0%)
free-post-setup-flow                    -108 B   (-0.2%)      -36 B   (-0.6%)
free-flow                               -108 B   (-0.2%)      -34 B   (-0.3%)
export                                  +108 B   (+0.0%)      +39 B   (+0.0%)
entrepreneur-flow                       -108 B   (-0.1%)      -35 B   (-0.1%)
email                                   +108 B   (+0.0%)      +35 B   (+0.0%)
domains                                 +108 B   (+0.0%)      +39 B   (+0.0%)
customize                               +108 B   (+0.0%)      +39 B   (+0.0%)
concierge                               +108 B   (+0.0%)      +39 B   (+0.0%)
comments                                +108 B   (+0.0%)      +39 B   (+0.0%)
checkout                                +108 B   (+0.0%)      +42 B   (+0.0%)
backup                                  +108 B   (+0.0%)      +38 B   (+0.0%)
assembler-first-flow                    -108 B   (-0.1%)      -33 B   (-0.2%)
ai-assembler-flow                       -108 B   (-0.1%)      -34 B   (-0.2%)
add-ons                                 +108 B   (+0.0%)      +39 B   (+0.0%)
activity                                +108 B   (+0.0%)      +39 B   (+0.0%)
a8c-for-agencies-overview               -103 B   (-0.0%)      -55 B   (-0.0%)
earn                                     -88 B   (-0.0%)    -1123 B   (-0.5%)

Sections contain code specific for a given set of routes. Is downloaded and parsed only when a particular route is navigated to.

Async-loaded Components (~686 bytes added 📈 [gzipped])

name                                                                              parsed_size           gzip_size
async-load-calypso-jetpack-cloud-sections-sidebar-navigation-manage-selected-...       +196 B  (+0.2%)     +686 B  (+1.9%)

React components that are loaded lazily, when a certain part of UI is displayed for the first time.

Legend

What is parsed and gzip size?

Parsed Size: Uncompressed size of the JS and CSS files. This much code needs to be parsed and stored in memory.
Gzip Size: Compressed size of the JS and CSS files. This much data needs to be downloaded over network.

Generated by performance advisor bot at iscalypsofastyet.com.

[p-jackson]

I spent some time testing the commerce flow, because I thought it was the flow that was using the redirectTo param to take the user through a Woo onboarding flow.
However it doesn't do this in production. Maybe it's not supposed to do this? I suppose it makes sense that someone focused on "hosting" would be more interested in "hosting" than in "selling".

This PR definitely does what it's expected to do: taking the user to wp-admin after creating a hosting site.

[matticbot]

This PR modifies the release build for the following Calypso Apps:

For info about this notification, see here: PCYsg-OT6-p2

• notifications
• wpcom-block-editor

To test WordPress.com changes, run install-plugin.sh $pluginSlug update/redirect-hosting-flow-to-wp-admin on your sandbox.