Verse: Adopt border supports

[aaronrobertshaw]

What?

• Adopts border support for the Verse block

Why?

• Another small step towards consistent design tooling across all blocks.

How?

• Adopts all border supports for the Verse block
• No border controls are displayed by default

Testing Instructions

1. Navigate to the Site Editor > Global Styles > Style Book
2. Select the Verse block under the Text tab
3. Within the Global Styles sidebar, select Border
4. Trial adding different border configurations and ensure they are displayed correctly in the preview
5. Save the Global Styles and switch to editing a post in the Block Editor
6. Add a Verse block and confirm it receives the border you set in Global Styles
7. Save the post and confirm border is applied on the front end
8. Back in the editor, select the Verse block and reconfigure its border via the Block Inspector
9. The new border should override the Global Styles you set
10. Save and confirm the new custom border is displayed correctly on the frontend

Screenshots or screencast

Screen.Recording.2023-02-13.at.9.42.56.pm.mp4

[github-actions]

Flaky tests detected in 46e1dfb.
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/4179162112
📝 Reported issues:

• [Flaky Test] should leave a scheduled page scheduled if canceled #47499 in specs/editor/various/switch-to-draft.test.js
• [Flaky Test] should make the modal content focusable when it is scrollable #48067 in /test/e2e/specs/editor/various/a11y.spec.js
• [Flaky Test] should revert a scheduled page to a draft if confirmed #47500 in specs/editor/various/switch-to-draft.test.js

[glendaviesnz]

LGTM:
✅ Border color and radius applied to block in global styles were applied to block in post editor and frontend
✅ Border color and radius were optional and not shown by default in post editor block inspection panel
✅ When optional color/radius controls were selected and set in post editor the changes overrode the global style settings in editor and frontend