fix CI

Author: mvorisek

demos/form-control/multiline-containsmany-single.php

@@ -14,5 +14,9 @@
 $form = Form::addTo($app);
 $form->setEntity((new MultilineDelivery($app->db))->createEntity());
 $form->onSubmit(static function (Form $form) {
+    // save ContainsXxx data to JSON
+    $form->entity->save();
+    $form->entity->setNull($form->entity->idField);
+
     return new JsToast($form->getApp()->encodeJson($form->entity->get()));
 });