Menus: Fix alignment of menu actions on mobile.

In [41197], changes were made to improve the responsive view for the Menu Name field and Save buttons. This caused the Delete Menu button to be misaligned.

Props ianbelanger, audrasjb, afercia, mukesh27.
Fixes #47173.
Built from https://develop.svn.wordpress.org/trunk@45324


git-svn-id: http://core.svn.wordpress.org/trunk@45135 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/css/nav-menus-rtl.css

@@ -835,7 +835,7 @@ body.menu-max-depth-11 { min-width: 1280px !important; }
 		width: 100%;
 	}
 
-	.nav-menus-php .major-publishing-actions .publishing-action {
+	.nav-menus-php #nav-menu-header .major-publishing-actions .publishing-action {
 		padding-top: 1em;
 	}
 

wp-admin/css/nav-menus.css

@@ -835,7 +835,7 @@ body.menu-max-depth-11 { min-width: 1280px !important; }
 		width: 100%;
 	}
 
-	.nav-menus-php .major-publishing-actions .publishing-action {
+	.nav-menus-php #nav-menu-header .major-publishing-actions .publishing-action {
 		padding-top: 1em;
 	}