Toolbar: Allow submenus to be closed with a second tap on touch devices.

Also closes submenus when the admin menu is toggled open, as it opens below and thus can be obscured.

props stephdau, seanchayes.
see #29906.

Built from https://develop.svn.wordpress.org/trunk@33056


git-svn-id: http://core.svn.wordpress.org/trunk@33027 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/css/admin-menu-rtl.css

@@ -920,6 +920,10 @@ li#wp-admin-bar-menu-toggle {
 		-moz-box-sizing: border-box;
 		box-sizing: border-box;
 	}
+
+	.wp-responsive-open #wpadminbar #wp-admin-bar-menu-toggle .ab-icon:before {
+		color: #00b9eb;
+	}
 }
 
 /* Smartphone */

wp-admin/css/admin-menu.css

@@ -920,6 +920,10 @@ li#wp-admin-bar-menu-toggle {
 		-moz-box-sizing: border-box;
 		box-sizing: border-box;
 	}
+
+	.wp-responsive-open #wpadminbar #wp-admin-bar-menu-toggle .ab-icon:before {
+		color: #00b9eb;
+	}
 }
 
 /* Smartphone */