My Home: Add Change Theme to Quick Links

[taipeicoder]

Fixes #94063

Proposed Changes

This PR adds "Change theme" to the Quick Links section in My Home.

It turns out that the "Change theme" quick link was already implemented, but never rendered since the capability switch_themes seems to be filtered out from the endpoint. Thus, we check for manage_option instead to follow the Explore Plugins quick link. Another option would be to check for edit_theme_options which is available.

Why are these changes being made?

Contributes to the overall polish of WordPress.com.

Testing Instructions

• Go to /home/:domain
• Ensure that the "Change theme" quick link is now available
• In the Default admin interface, it should link to /themes/:domain
• In the Classic admin interface, it should link to themes.php

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 UI changes, have we tested the change in various languages (for example, ES, PT, FR, or DE)? The length of text and words vary significantly between languages.
• 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:commit-d47dc8768ee97f488d37f7b780d6242fceb63e8a

Jetpack Cloud live (direct link)

https://calypso.live?image=registry.a8c.com/calypso/app:commit-d47dc8768ee97f488d37f7b780d6242fceb63e8a&env=jetpack

Automattic for Agencies live (direct link)

https://calypso.live?image=registry.a8c.com/calypso/app:commit-d47dc8768ee97f488d37f7b780d6242fceb63e8a&env=a8c-for-agencies

[matticbot]

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

Sections (~2 bytes removed 📉 [gzipped])

name  parsed_size           gzip_size
home        +54 B  (+0.0%)       -2 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.

[fushar]

Tested on both Default and Classic interfaces 👍