Social login: Catch inaccessible sessionStorage errors

[ivan-ottinger]

Resolves #88792.

Proposed Changes

• add error handling for cases where sessionStorage is not accessible

ℹ️ Since this error is quite infrequent, this PR doesn't wait for the translations to be finished.

Testing Instructions

1. Check out and build the proposed changes.
2. Navigate to http://calypso.localhost:3000/start/user-social.
3. Open browser console and delete sessionStorage by entering delete window.sessionStorage;.
4. Click on the Continue with Google button.
5. The error notice should display (as can be seen in the screenshot above).

Pre-merge Checklist`

• Has the general commit checklist been followed? (PCYsg-hS-p2)
• https://wpcalypso.wordpress.com/devdocs/docs/testing/index.md 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-101732

Jetpack Cloud live (direct link)

https://calypso.live?image=registry.a8c.com/calypso/app:build-101732&env=jetpack

Automattic for Agencies live (direct link)

https://calypso.live?image=registry.a8c.com/calypso/app:build-101732&env=a8c-for-agencies

[matticbot]

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

Sections (~92 bytes added 📈 [gzipped])

name             parsed_size           gzip_size
jetpack-connect       +331 B  (+0.0%)      +92 B  (+0.0%)
accept-invite         +331 B  (+0.2%)      +92 B  (+0.2%)

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 (~92 bytes added 📈 [gzipped])

name                          parsed_size           gzip_size
async-load-signup-steps-user       +331 B  (+0.2%)      +92 B  (+0.2%)

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.

[yansern]

Followed test instructions and it is as expected.

[yansern]

Summary: This PR wraps the access of sessionStorage in a try..catch block, and displays an error notice if the error is caught.