Fix the media player controls bar width in the media views.

Props vaishalipanchal, chetan200891.
Fixes #47457.


git-svn-id: https://develop.svn.wordpress.org/trunk@45497 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-admin/css/media.css

@@ -1145,6 +1145,10 @@ audio, video {
 	max-width: 100%;
 }
 
+.mejs-container .mejs-controls {
+	box-sizing: border-box;
+}
+
 /* =Media Queries
 -------------------------------------------------------------- */