MC-19716: Cannot change action settings of scheduled update for cart rule

Author: yelahin-serhiy

app/code/Magento/SalesRule/Controller/Adminhtml/Promo/Quote/NewActionHtml.php

@@ -1,12 +1,17 @@
 <?php
 /**
- *
  * Copyright © Magento, Inc. All rights reserved.
  * See COPYING.txt for license details.
  */
 namespace Magento\SalesRule\Controller\Adminhtml\Promo\Quote;
 
-class NewActionHtml extends \Magento\SalesRule\Controller\Adminhtml\Promo\Quote
+use Magento\Framework\App\Action\HttpPostActionInterface;
+use Magento\SalesRule\Controller\Adminhtml\Promo\Quote;
+
+/**
+ * New action html action
+ */
+class NewActionHtml extends Quote implements HttpPostActionInterface
 {
     /**
      * New action html action
@@ -37,7 +42,6 @@ public function execute()
 
         if ($model instanceof \Magento\Rule\Model\Condition\AbstractCondition) {
             $model->setJsFormObject($formName);
-            $model->setFormName($formName);
             $html = $model->asHtmlRecursive();
         } else {
             $html = '';

dev/tests/integration/testsuite/Magento/SalesRule/Controller/Adminhtml/Promo/Quote/NewActionHtmlTest.php

@@ -0,0 +1,41 @@
+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+declare(strict_types=1);
+
+namespace Magento\SalesRule\Controller\Adminhtml\Promo\Quote;
+
+use Magento\TestFramework\Helper\Bootstrap;
+use Magento\TestFramework\TestCase\AbstractBackendController;
+
+/**
+ * New action html test
+ */
+class NewActionHtmlTest extends AbstractBackendController
+{
+    /**
+     * Test verifies that execute method has the proper data-form-part value in html response
+     *
+     * @return void
+     */
+    public function testExecute(): void
+    {
+        $formName = 'test_form';
+        $this->getRequest()->setParams(
+            [
+                'id' => 1,
+                'form_namespace' => $formName,
+                'type' => 'Magento\SalesRule\Model\Rule\Condition\Product|quote_item_price',
+            ]
+        );
+        $objectManager = Bootstrap::getObjectManager();
+        /** @var NewActionHtml $controller */
+        $controller = $objectManager->create(NewActionHtml::class);
+        $controller->execute();
+        $html = $this->getResponse()
+            ->getBody();
+        $this->assertContains($formName, $html);
+    }
+}