fix: use validate_update_request in partial_update

program/views.py

@@ -1134,6 +1134,8 @@ class APIScheduleViewSet(viewsets.ModelViewSet):
         Partial update a schedule without generating timeslots, testing or resolving collisions.
         """
 
+        self.validate_update_request()
+
         # only these fields can be updated without generating conflicts
         allowed = {"default_playlist_id", "is_repetition", "last_date"}
         update_fields = set(request.data.get("schedule").keys())