Media Text: Add border support

[aaronrobertshaw]

Part of: #43241

What?

Adopts border support for Media and Text block.

Why?

• Offers greater design flexibility
• Improves consistency in design tooling with other blocks

How?

• Adopts all the available border block supports

Testing Instructions

• In the site editor, add a Media Text block to a page
• Style via Global Styles and confirm the editor and frontend display correctly
• Override the global styles on the block instance and confirm they display appropriately in the editor and frontend

Screenshots or screencast

Screen.Recording.2024-07-15.at.12.51.34.PM.mp4

[github-actions]

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[andrewserong]

This is testing well for me in the post and site editors, in global styles, and in overrides at the individual block level 👍

Similar to the discussion in adding the border support to the Gallery block in #63428, I notice that the Media & Text block does not clip the image when we set a heavy border radius:

Since the consensus over in #63428 (comment) was to allow border radius even if the block doesn't clip, I don't think it's an issue here, particularly as padding can be set on this block.

LGTM! 🚀

[aaronrobertshaw]

Since the consensus over in #63428 (comment) was to allow border-radius even if the block doesn't clip, I don't think it's an issue here, particularly as padding can be set on this block.

A possible follow-up could be to explore inheriting border-radius on the inner image but combined with the ability to add padding to the media and text block, I'm not sure how well it would work in practice.

Ultimately, I think refactoring this block to use an inner Image block, is our best bet. It would then allow optional control over the inner image border-radius.

As per the linked consensus, let's lean into greater design freedom and merge this 👍