Social | Standardize connections API schema

[manzoorwanijk]

Fixes #

Proposed changes:

Other information:

• Have you written new tests for your changes, if applicable?
• Have you checked the E2E test CI results, and verified that your changes do not break them?
• Have you tested your changes on WordPress.com, if applicable (if so, you'll see a generated comment below with a script to run)?

Jetpack product discussion

Does this pull request change what data or activity we track or use?

Testing instructions:

• Apply D168243-code to your sandbox and point public API and your site to it.
• Goto connections management on a Jetpack site and verify that everything works same as before like adding, removing and updating connections.
• On a Simple site, goto editor
• Open Jetpack sidebar
• Verify that Connections management now opens the modal, instead of pointing to Calypso
• In the modal, confirm that the connections show up fine.
• Note that adding/removing connections is not yet implemented for simple sites

[github-actions]

Thank you for your PR!

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[github-actions]

Are you an Automattician? Please test your changes on all WordPress.com environments to help mitigate accidental explosions.

• To test on WoA, go to the Plugins menu on a WordPress.com Simple site. Click on the "Upload" button and follow the upgrade flow to be able to upload, install, and activate the Jetpack Beta plugin. Once the plugin is active, go to Jetpack > Jetpack Beta, select your plugin, and enable the update/unify-social-connections-schema branch.

• To test on Simple, run the following command on your sandbox:

  bin/jetpack-downloader test jetpack update/unify-social-connections-schema
  

Interested in more tips and information?

• In your local development environment, use the jetpack rsync command to sync your changes to a WoA dev blog.
• Read more about our development workflow here: PCYsg-eg0-p2
• Figure out when your changes will be shipped to customers here: PCYsg-eg5-p2

[manzoorwanijk]

This clear_cache needs to be removed before merging.

[manzoorwanijk]

Closing in favour of #40589 which uses a different approach