MC-3410: Category Tree Bug in Products Block - Cannot read property 'updateElement' of undefined

- Fixed issue with jsObjectName not being set correctly for nested condition objects

Author: nathanjosiah

app/code/Magento/PageBuilder/Block/Adminhtml/Form/Element/ProductConditions.php

@@ -61,6 +61,7 @@ private function getConfig(): array
                 [
                     'form_namespace' => $formNamespace,
                     'prefix' => $attribute,
+                    'js_object_name' => $jsObjectName,
                 ]
             ),
             'jsObjectName' => $jsObjectName,

app/code/Magento/PageBuilder/Controller/Adminhtml/Form/Element/ProductConditions.php

@@ -54,7 +54,7 @@ public function execute()
         $this->rule->loadPost(['conditions' => $this->serializer->unserialize($conditionsEncoded)]);
         $formName = $this->getRequest()->getParam('form_namespace');
         // Combine class recursively sets jsFormObject so we don't need to
-        $conditions->setJsFormObject($formName);
+        $conditions->setJsFormObject($this->getRequest()->getParam('js_object_name'));
         // The Combine class doesn't need the data attribute on children but we do.
         $this->configureConditionsFormName($conditions, $formName);
         $result = $conditions->asHtmlRecursive();