Milestone M29 updates

Let's go through what we got done in Milestone M29 (Jan 27 - Feb 09).

This milestone was focused on bug fixes:

• The embed block in the Yoga Studio template was marked with the wrong category (embed instead of embed_video). Fixed the template and migrated all existing data in DB.

• Added a toString() to rich text content rendering a single integer to prevent page crashes.

• Refactored Public::PublishedSitesController to return predictable errors.

Enhancement:

• Improved the FAQ block.

  • The entire question is now clickable. The block can only be opened and closed by clicking on the title, ensuring behavior is consistent with a generic FAQ block.

  • The expand icon will match the text color instead of using a hardcoded gray variant.