Comments Reply Link: Add missing typography support

[aaronrobertshaw]

Related:

• Tracking: Addressing Design Tooling Consistency #43241
• Tracking: Typography Design Tools Consistency #43242

What?

• Adds missing text-decoration support to the Comments Reply Link.
• Makes font size a default control to match other text-related blocks

Why?

While there might not be a lot of value in text-decoration styles for the comment reply link, adding this helps us ensure consistent design tools across blocks.

How?

• Opts into text decoration support.
• Makes font size a default control

Testing Instructions

1. Load the block editor with a post containing comments
2. Add a comments block to the post and select the comment's reply link
3. Confirm font size is now displayed by default
4. Confirm the text decoration control is now available within the Typography panel's ellipsis menu
5. Experiment with the typography settings
6. Save and confirm the styles appear on the frontend
7. Test the new support works for the block via theme.json and global styles.

Screenshots or screencast

Screen.Recording.2022-08-16.at.8.45.20.pm.mp4

[ramonjd]

✅ Typography controls are available in the panel's ellipsis menu
✅ Comment reply link styles appear correctly in editor and frontend (block and classic themes)
✅ Tested typography for comment reply link block in theme.json and global styles.