Comments: Improve the appearance of the Status box on Edit Comment screen.

This makes the box more consistent with the Publish meta box in classic editor.

Props birgire, nfmohit, melchoyce, afercia.
Fixes #43587.
Built from https://develop.svn.wordpress.org/trunk@47252


git-svn-id: https://core.svn.wordpress.org/trunk@47052 1a063a9b-81f0-0310-95a4-ce76da25c4cd