[RNMobile] Block Inserter: Limit Jetpack block collection to the WordPress app

[SiobhyB]

Addresses the discussion at #25092 (comment).

Related PRs

• Gutenberg Mobile: Enable the native editor to receive a host app's namespace wordpress-mobile/gutenberg-mobile#5040

Changes proposed in this Pull Request:

• Following the changes in feat: Enable Jetpack collection for native block inserter #25092, this PR limits the Jetpack block section (found in the block inserter) to the WordPress app. The thinking behind this change is that a dedicated Jetpack section is somewhat redundant in the Jetpack app.
• A new native-specific function, getHostAppNamespace(), has been added to the projects/js-packages/shared-extension-utils directory. This new function makes it possible to retrieve a host app's namespace from within the Jetpack codebase. This will be useful in cases where it's necessary to check whether the Jetpack or WordPress app is in use.
• The use of a conditional around the Jetpack block collection limits the collection's display to the WordPress app.
• I followed a similar pattern to what is in place in the web's block-category.js file. i.e. the Jetpack collection has a !isWpcom conditional wrapped around it.

Jetpack product discussion

Discussion related to this enhancement happened at #25092 (comment).

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

No, it does not.

Testing instructions:

Installable builds for both the iOS and Android apps can be found in the following PRs:

• iOS: [Gutenberg Mobile] Enable the native editor to receive a host app's namespace wordpress-mobile/WordPress-iOS#19084
• Android: [Gutenberg Mobile] Enable the native editor to receive a host app's namespace wordpress-mobile/WordPress-Android#16935

To help test, go through the following steps for each PR and app:

Jetpack app:

• Download and open the Jetpack app.
• Navigate to the post editor and tap the + icon.
• Scroll to the bottom of the block list and confirm that there isn't a highlighted Jetpack section.

WordPress app:

• Download and open the WordPress app.
• Navigate to the post editor and tap the + icon.
• Scroll to the bottom of the block list and confirm that there is a highlighted Jetpack section.

Screenshots

Jetpack	WordPress

[github-actions]

Thank you for your PR!

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Jetpack plugin:

• Next scheduled release: August 2, 2022.
• Scheduled code freeze: July 25, 2022.

[matticbot]

Caution: This PR has changes that must be merged to WordPress.com
Hello SiobhyB! These changes need to be synced to WordPress.com - If you 're an a11n, please commandeer and confirm D84650-code works as expected before merging this PR. Once this PR is merged, please commit the changes to WP.com. Thank you!
This revision will be updated with each commit to this PR

[dcalhoun]

LGTM. 🚀 I verified the Jetpack block collection was displayed in the WordPress app and hidden in the Jetpack app on an iPhone SE (iOS 15.6) and a Samsung Galaxy S20 (Android 12).

[SiobhyB]

Thank you, David! 🙌

For the Jetpack crew: I don't have commit access to WP.com, so would be grateful if you could handle that portion of the merge for me. Thanks in advance 🙇‍♀️

[github-actions]

Great news! One last step: head over to your WordPress.com diff, D84650-code, and deploy it.
Once you've done so, come back to this PR and add a comment with your SVN changeset ID (e.g. r12345-wpcom).

Thank you!

[jeherve]

r249598-wpcom