Fix 2nd JPBU storage product renews original instead of purchasing new.

[elliottprogrammer]

Proposed Changes

This PR works along with patch D98931-code and fixes issue https://github.com/Automattic/jpop-issues/issues/7976 where attempting to purchase a 2nd duplicate JPBU storage add-on product was renewing the original product instead of purchasing a second storage add-on product.

Fixes: https://github.com/Automattic/jpop-issues/issues/7976

Testing Instructions

• This PR works along side with WPCOM patch D98931-code.
• Full testing instructions are located on patch D98931-code .

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-ajp-p2)?

Related to #

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[github-actions]

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[matticbot]

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

Sections (~31 bytes added 📈 [gzipped])

name    parsed_size           gzip_size
plans         +44 B  (+0.0%)      +16 B  (+0.0%)
backup        +44 B  (+0.0%)      +15 B  (+0.0%)

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

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.

[TheSteveK]

Tested with backend changes 🚀