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

@@ -16,7 +16,7 @@ class NewActionHtml extends \Magento\SalesRule\Controller\Adminhtml\Promo\Quote
     public function execute()
     {
         $id = $this->getRequest()->getParam('id');
-        $formName = $this->getRequest()->getParam('form');
+        $formName = $this->getRequest()->getParam('form_namespace');
         $typeArr = explode('|', str_replace('-', '/', $this->getRequest()->getParam('type')));
         $type = $typeArr[0];
 
@@ -37,6 +37,7 @@ public function execute()
 
         if ($model instanceof \Magento\Rule\Model\Condition\AbstractCondition) {
             $model->setJsFormObject($formName);
+            $model->setFormName($formName);
             $html = $model->asHtmlRecursive();
         } else {
             $html = '';