Filter to switch from the Interactivity API to the old implementation

[luisherranz]

What?

Add filters to switch from the Interactivity API to the old implementation of the Navigation and File blocks.

Follow up on #52553.

Why?

To be able to keep improving those versions, which are still in WP Core (more context).

How?

Just replace the IS_GUTENBERG_PLUGIN constant which was used to avoid merging the Interactivity API in Core with two filters, one for each block:

• gutenberg_block_core_navigation_use_interactivity_api
• gutenberg_block_core_file_use_interactivity_api

Testing Instructions

• Add a Navigation block
• Check that it works with the Interactivity API (check the network tab or accessibility improvements like aria-expanded switching to true on hover).
• Add this filter somewhere in your code:

  add_filter( 'gutenberg_block_core_navigation_use_interactivity_api', '__return_false' );

• Check that the Navigation block now works with micromodal (check the network tab or accessibility issues like aria-expanded not switching to true on hover).

[luisherranz]

@SantosGuillamot, I'd appreciate your review to make sure I didn't miss anything. Thanks 🙂

[luisherranz]

Closing as duplicate of @westonruter's #52579.

[westonruter]

Is this right? The code in here is not all related to Interactivity API.

[luisherranz]

You're right, but let's use your PR instead: #52579

[github-actions]

Flaky tests detected in d762b95.
Some tests passed with failed attempts. The failures may not be related to this commit but are still reported for visibility. See the documentation for more information.

🔍 Workflow run URL: https://github.com/WordPress/gutenberg/actions/runs/5534847419
📝 Reported issues:

• [Flaky Test] Block context is reflected in the preview #48826 in specs/editor/plugins/block-context.test.js
• [Flaky Test] fade animation #52347 in /test/e2e/specs/editor/blocks/image.spec.js
• [Flaky Test] lightbox should be overriden when link is configured for image #52348 in /test/e2e/specs/editor/blocks/image.spec.js