Refactor Product Categories block to use block.json

[wojtekn]

I refactor the block to use block.json schema. The block schema internally extends the main block.json schema, and it fixes an issue that occurs on WPCOM.

Fixes Automattic/wp-calypso#62337

Testing

User Facing Testing

WooCommerce Blocks

1. Add Product Categories List block as a widget (Appearance → Widgets)
2. Open block settings
3. Test block controls, save, and review if it still renders correctly in the frontend

WPCOM

1. Add Product Categories List block as a widget (Appearance → Widgets)
2. Open block settings
3. Open Advanced and click on "Add new rule" under Visibility

Users should be able to add new visibility rules, with a real-time preview of the block

• Do not include in the Testing Notes

WooCommerce Visibility

• WooCommerce Core
• Feature plugin
• Experimental

Changelog

Refactor Product Categories block to use block.json

[Aljullu]

Thanks for this improvement, @wojtekn! Code changes look good to me and I did a round of smoke testing and everything was working well. For reference: I only tested in a dev site, I didn't test in a .com site.