Enlarge update.php content

[sebastienserre]

Hello,
When uploading a plugin from the back office, the plugin name is trimmed
I think we should benefit from more space by removing the max-width: 40rem on .update-php .wrap

Removes the .update-php .wrap { max-width: 40rem; } rule from src/wp-admin/css/themes.css. It was added in r48390 and limits the content width on the theme and plugin install/update screens (wp-admin/update.php).

Testing Instructions

1. Go to Appearance > Themes > Add New Theme > Upload Theme and upload a .zip of a theme that is already installed.
2. Before the patch, the install/replace screen is limited to 40rem.
3. After the patch, the screen uses the full admin width, the same as other admin screens.
4. Repeat with Plugins > Add New Plugin > Upload Plugin.

Use of AI Tools

AI assistance: Yes
Tool(s): Claude Code
Used for: Preparing the commit message and PR description. The CSS change was written and reviewed by me.

[sebastienserre]

Works for me

Works for me.