quick app: check type in notify

frontends/src/quick_frontend/quick_app.py

@@ -636,6 +636,7 @@ class QuickApp(object):
         @param cb_args(list, None): list of args for callback
         @param widget(object, None): widget where the notification happened
         """
+        assert type_ in C.NOTIFY_ALL
         notif_dict = self.profiles[profile].notifications
         key = '' if entity is None else entity.bare
         type_notifs = notif_dict.setdefault(key, {}).setdefault(type_, [])