Refactor/prod blocks registration 4

[monsieur-z]

Fixes #

Proposed changes:

Other information:

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Testing instructions:

• Go to '..'

[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 > Jetpack and enable the refactor/prod-blocks-registration-4 branch.

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  bin/jetpack-downloader test jetpack refactor/prod-blocks-registration-4
  

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[github-actions]

Thank you for your PR!

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Jetpack plugin:

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[monsieur-z]

Closed in favour of #33667.