Attach WooCommerce templates to the theme

[Aljullu]

Changes proposed in this Pull Request:

Closes #42181.

This PR changes some of the logic of the templates introduced by WooCommerce so instead of being plugin templates they are considered regular theme templates. This makes that when the user switches themes, the templates aren't carried over, fixing #42181.

At the same time, it brings the regression that the theme name is shown as the author of the templates, instead of WooCommerce. Fixing this will likely require changes upstream.

Todo list:

• Make it so WooCommerce templates are not carried-over when switching themes.
• Update existing tests.
  • Fix template-customization.block_theme_with_templates.spec.ts tests.
• Update slugs test to test woocommerce/woocommerce slug as well.
• (Might be impossible) investigate if it's possible to keep 'WooCommerce' as the visible author of the templates.

How to test the changes in this Pull Request:

1. With TT4 make some edits to WooCommerce templates.
2. Go to the frontend and verify the edits were applied correctly.
3. Switch to TT3.
4. Verify the edits you did to WooCommerce templates in step 1 are no longer visible, neither in the editor nor the frontend.
5. Switch back to TT4.
6. Verify the edits you did to WooCommerce templates in step 1 are visible as expected, in the editor and the frontend.

Changelog entry

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Significance

• Patch
• Minor
• Major

Type

• Fix - Fixes an existing bug
• Add - Adds functionality
• Update - Update existing functionality
• Dev - Development related task
• Tweak - A minor adjustment to the codebase
• Performance - Address performance issues
• Enhancement - Improvement to existing functionality

Message

Comment

[Aljullu]

WordPress internally uses get_stylesheet() for the theme name:

https://github.com/WordPress/wordpress-develop/blob/7159243c090e429a7d2a1fd2a9509e323f67a39d/src/wp-includes/rest-api/endpoints/class-wp-rest-templates-controller.php#L544