Ignore empty repo for CreateRepository in action notifier (#29416)

Fix #29415

(cherry picked from commit 403766cd81697288804fd218d68c458c6aa5b73d)

services/actions/notifier_helper.go

@@ -117,6 +117,9 @@ func notify(ctx context.Context, input *notifyInput) error {
 		log.Debug("ignore executing %v for event %v whose doer is %v", getMethod(ctx), input.Event, input.Doer.Name)
 		return nil
 	}
+	if input.Repo.IsEmpty {
+		return nil
+	}
 	if unit_model.TypeActions.UnitGlobalDisabled() {
 		return nil
 	}