Comments: Add Layout Support

[shail-mehta]

What?

Added Layout support to the Comments Block.

Part of : #43248

Why?

The block was missing Layout Support Features.

Testing Instructions

• Add Comments Block in Single Posts Template or Page/Post .
• Enable Inner blocks use content width Option.
• Also Check With layout width in Layout Settings
• Check Settings in Editor and Frontend Side

Screenshots or Screencast

comments-layout-support.mp4

[github-actions]

Flaky tests detected in 39cb72c.
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/12608026563
📝 Reported issues:

• [Flaky Test] Navigates the items list via UP/DOWN arrow keys #64334 in /test/e2e/specs/site-editor/dataviews-list-layout-keyboard.spec.js
• [Flaky Test] submenu click on the arrow interactions #61884 in /test/e2e/specs/editor/blocks/navigation-frontend-interactivity.spec.js

[github-actions]

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Co-authored-by: shail-mehta <[email protected]>
Co-authored-by: aaronrobertshaw <[email protected]>

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[aaronrobertshaw]

Thanks for the PR @shail-mehta 👍

As noted on a couple of your other recent support PRs, I don't have the bandwidth for reviews in the near future.

Can you please clarify the test instructions on this PR so that anyone regardless of context, can help review?

[shail-mehta]

Thanks for the feedback. I will work on this.