Twenty Nineteen: adjust avatar dimensions for comment author

[sabernhardt]

r58580 increased the size of avatars for the author of each comment (in the theme's template) from 49.5 pixels to 60. The image itself simply extends 10 pixels into the margin on larger screens now, but the author checkbox icon is positioned based on the earlier dimensions.

The 2.25rem dimensions could go in the comments SCSS file to restore them without affecting the avatar blocks.

• Restores 49.5 by 49.5 dimensions for comment author avatar next to each comment
• Removes unnecessary auto dimensions
• Does not assign dimensions for the images in Avatar, Author or Latest Comments blocks

Trac 62096

Before patch, the avatars are 60 by 60 pixels.

With the patch, the avatars are 49.5 by 49.5.

[nithins53]

Tested the patch, works on my side.

[sudipatel007]

Test Report

Description
I have tested it with out patch in WP 6.7 and Avatars for the author of each comment is 60px

Environment

• WordPress: 6.7-alpha-59082
• PHP: 8.1.23
• Server: nginx/1.16.0
• Database: mysqli (Server: 8.0.16 / Client: mysqlnd 8.1.23)
• Browser: Chrome 129.0.0.0 (macOS)
• Theme: Twenty Nineteen 2.9
• MU-Plugins:
  • Testing 10up's Ad Refresh Control Plugin

Screenshot
​https://drive.google.com/file/d/1REzAUjH6sdzWLdTiZEheE6wDsV-J06T4/view?usp=sharing

[karmatosed]

In 59222:

Twenty Nineteen: Fixes adjusting avatar dimensions for comment author.

In Twenty Nineteen r58580 increased size of avatars. This caused issues with the position of author checkbox. This resolves by moving without impacting the avatar blocks.

Props sabernhardt, nithins53, sudipatel007.
Fixes #62096.

[karmatosed]

I tested this and confirm the patch works so went through and pushed this to commit, thank you everyone.

Committed in r59222