fix: use system secret config if generator type does not exist on instance (#6420)

* fix: use system secret config if generator type does not exist on instance

* remove unused idGenerator

(cherry picked from commit cbd2ef0612)

cmd/setup/config_change.go

@@ -57,6 +57,7 @@ func (mig *externalConfigChange) Execute(ctx context.Context) error {
 		0,
 		0,
 		0,
+		nil,
 	)
 
 	if err != nil {