Use a less element-specific class name for links within page titles.

After [32974] these links are no longer within an `h2`, making the class name
inaccurate. `add-new-h1` has the potential to expose the same problem for in a
possible future change.

Fixes #31650.



git-svn-id: https://develop.svn.wordpress.org/trunk@33067 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-admin/widgets.php

@@ -320,7 +320,7 @@ require_once( ABSPATH . 'wp-admin/admin-header.php' ); ?>
 	echo esc_html( $title );
 	if ( current_user_can( 'customize' ) ) {
 		printf(
-			' <a class="add-new-h2 hide-if-no-customize" href="%1$s">%2$s</a>',
+			' <a class="page-title-action hide-if-no-customize" href="%1$s">%2$s</a>',
 			esc_url( add_query_arg(
 				array(
 					array( 'autofocus' => array( 'panel' => 'widgets' ) ),