Description

Follow-up to PR #35593.

In WordPress Core's changeset 52369, two additional html5 theme supports were added: 'comment-form' and 'comment-list'. This issue seeks to backport the changeset from Core to Gutenberg to resync for parity.

The difference between Gutenberg and Core causes differences in Twenty Twenty-Two's comm ents markup output and visual styling. See Core Trac ticket https://core.trac.wordpress.org/ticket/54625 for more details.

To resync with Core by adding the 2 additional supports in the `lib/compat/wordpress-5.9/default-theme-support.php file

Step-by-step reproduction instructions

NA

Screenshots, screen recording, code snippet

NA

Environment info

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Please confirm that you have searched existing issues in the repo.

Yes

Please confirm that you have tested with all plugins deactivated except Gutenberg.

Yes