Admin bar styling: Ensure text next to icon stays visible on focus when jQuery...

Admin bar styling: Ensure text next to icon stays visible on focus when jQuery is not loaded. props koopersmith, linuxologos, fixes #19410.

git-svn-id: https://core.svn.wordpress.org/trunk@19540 1a063a9b-81f0-0310-95a4-ce76da25c4cd