Fix alignment issue with the comment edit link

[carolinan]

What?

This is the equivalent of #40582 but for the comment edit link.

Assures that the comment edit link text alignment setting works and that the block displays correctly on the front.
Also removes duplicate escaping.

Partial for #40269

Why?

The block had duplicate font-size classes on the front. This caused the alignment class and the font size class to be output as one word without spacing in between them, and the CSS was not applied. Because of this, the alignment option did not work.

How?

By removing the extra output of the font size class, the class name for the text alignment is correct and the CSS applied.

Testing Instructions

1. Add a comment query loop to a post or page that has comments.
2. Select the inner comment edit link block.
3. Test the toolbar option for text alignment.
4. Test the font size option in the block settings sidebar.
5. Save and view the front. Confirm that both the text alignment and the font size works.

Screenshots or screencast

After:

[cbravobernal]

LGTM!

[adamziel]

This was backported to wp/6.0 branch to be included in WordPress 6.0 Beta 3 today: 1c6faeb