skip nad webhook for the internal invoke

- skip nad mutating webhook if .spec.config is not changed
- skip nad validating webhook if .spec.config and route annotation are not changed

pkg/webhook/nad/mutator.go

@@ -37,7 +37,7 @@ func (m *Mutator) Update(_ *types.Request, oldObj, newObj runtime.Object) (types
 	if newNad.DeletionTimestamp != nil {
 		return nil, nil
 	}
-
+	// ignore the update if the config is not being updated
 	if oldNad.Spec.Config == newNad.Spec.Config {
 		return nil, nil
 	}