Plugins: Ensure only plugin icons are floated.

There's no reason not to add a semantic class to the plugin icons on the update screen instead of making our CSS more complex, so let's do that and ensure that the existing `.plugin-icon` styles are scoped to `.plugin-card` on the install screen.

Partially reverts [60673].
Fixes #63120.



git-svn-id: https://develop.svn.wordpress.org/trunk@60680 602fd350-edb4-49c9-b593-d223f7449a82

Author: helen

src/wp-admin/css/list-tables.css

@@ -1315,9 +1315,7 @@ ul.cat-checklist input[name="post_category[]"]:indeterminate::before {
 
 /* modified for the emoji */
 .plugins .plugin-title .dashicons,
-.plugins .plugin-title img.dashicons,
-.plugins .plugin-title img[class*="icon"],
-.plugins .plugin-title img[src*="data:image"] {
+.plugins .plugin-title img.plugin-icon {
 	float: left;
 	padding: 0 10px 0 0;
 	width: 64px;
@@ -1741,7 +1739,7 @@ div.action-links,
 	margin: 20px 20px 0;
 }
 
-.plugin-icon {
+.plugin-card .plugin-icon {
 	position: absolute;
 	top: 20px;
 	left: 20px;

src/wp-admin/update-core.php

@@ -518,7 +518,7 @@ function list_plugin_updates() {
 		$preferred_icons = array( 'svg', '2x', '1x', 'default' );
 		foreach ( $preferred_icons as $preferred_icon ) {
 			if ( ! empty( $plugin_data->update->icons[ $preferred_icon ] ) ) {
-				$icon = '<img src="' . esc_url( $plugin_data->update->icons[ $preferred_icon ] ) . '" alt="" />';
+				$icon = '<img src="' . esc_url( $plugin_data->update->icons[ $preferred_icon ] ) . '" alt="" class="plugin-icon" />';
 				break;
 			}
 		}