Fixed gesture list gear menu (FIRE-3528)

indra/newview/skins/default/xui/en/menu_gesture_gear.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8" standalone="yes" ?>
-<menu
+<toggleable_menu
  layout="topleft"
  mouse_opaque="false"
  name="menu_gesture_gear"
@@ -62,4 +62,4 @@
          function="Gesture.EnableAction"
          parameter="edit_gesture" />
     </menu_item_call>
-</menu>
+</toggleable_menu>