keyboard: Capture and bubble event in maybeHandleEvent

Right now the clutter_actor_event() call here errors out because the
second argument is missing, make it capture and bubble the event
properly to fix that.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/2263>

js/ui/keyboard.js

@@ -1276,7 +1276,8 @@ var KeyboardManager = class KeyBoardManager {
 
         if (Main.layoutManager.keyboardBox.contains(actor) ||
             !!actor._extendedKeys || !!actor.extendedKey) {
-            actor.event(event);
+            actor.event(event, true);
+            actor.event(event, false);
             return true;
         }