Help Tab Order should be based on the Priority Argument

[34370] made the order that tabs are returned respect the order they are added, however it broke the respect of priority. By using a ksort instead of a sort, we can restore that default behavior. This adjusts the unit tests so that both order added and priority are tested.

Props meitar,  swissspidy, jorbin
Fixes #35215. See #33941.


git-svn-id: https://develop.svn.wordpress.org/trunk@36089 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-admin/includes/class-wp-screen.php

@@ -530,7 +530,7 @@ final class WP_Screen {
 			}
 		}
 
-		sort( $priorities );
+		ksort( $priorities );
 
 		$sorted = array();
 		foreach ( $priorities as $list ) {