Admin: Reskin - update dismiss icons sizing.

Update the sizing of icons in the welcome panel, bulk edit, quick edit, and admin notifications to use relative sizing, fixing alignment issues.

Update focus state for bulk edit remove buttons.

Props mohitbsf, opurockey, sabernhardt, huzaifaalmesbah, madhavishah01, r1k0, ozgursar, noruzzaman, shailu25, joedolson, mukesh27.
Fixes #64684.

git-svn-id: https://develop.svn.wordpress.org/trunk@61784 602fd350-edb4-49c9-b593-d223f7449a82

Author: joedolson

src/wp-admin/css/common.css

@@ -812,10 +812,10 @@ img.emoji {
 	content: "\f153";
 	content: "\f153" / '';
 	display: block;
-	font: normal 20px/24px dashicons;
-	height: 24px;
+	font: normal 20px/1 dashicons;
+	height: 1em;
 	text-align: center;
-	width: 24px;
+	width: 1em;
 	-webkit-font-smoothing: antialiased;
 	-moz-osx-font-smoothing: grayscale;
 }

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

@@ -1194,7 +1194,7 @@ ul.cat-checklist input[name="post_category[]"]:indeterminate::before {
 }
 
 #bulk-titles .ntdelbutton:focus {
-	box-shadow: 0 0 0 2px #3582c4;
+	box-shadow: 0 0 0 var(--wp-admin-border-width-focus, 1.5px) var(--wp-admin-theme-color, #3858e9);
 	/* Only visible in Windows High Contrast mode */
 	outline: 2px solid transparent;
 	/* Reset inherited offset from Gutenberg */