[TASK] Assign DataHandler's property copyTree only if the property exists (#689)

Author: dawind

Build/phpstan/phpstan-baseline.neon

@@ -24,6 +24,12 @@ parameters:
 			count: 1
 			path: ../../Classes/Core/Functional/Framework/Constraint/RequestSection/HasRecordConstraint.php
 
+		-
+			message: '#^Call to function property_exists\(\) with TYPO3\\CMS\\Core\\DataHandling\\DataHandler and ''copyTree'' will always evaluate to true\.$#'
+			identifier: function.alreadyNarrowedType
+			count: 1
+			path: ../../Classes/Core/Functional/Framework/DataHandling/Scenario/DataHandlerWriter.php
+
 		-
 			message: '#^Call to static method PHPUnit\\Framework\\Assert\:\:assertTrue\(\) with true will always evaluate to true\.$#'
 			identifier: staticMethod.alreadyNarrowedType

Classes/Core/Functional/Framework/DataHandling/ActionService.php

@@ -559,7 +559,7 @@ protected function createDataHandler(): DataHandler
     {
         $this->dataHandler = GeneralUtility::makeInstance(DataHandler::class);
         $backendUser = $this->getBackendUser();
-        if (isset($backendUser->uc['copyLevels'])) {
+        if (isset($backendUser->uc['copyLevels']) && property_exists($this->dataHandler, 'copyTree')) {
             $this->dataHandler->copyTree = $backendUser->uc['copyLevels'];
         }
         return $this->dataHandler;

Classes/Core/Functional/Framework/DataHandling/Scenario/DataHandlerWriter.php

@@ -33,7 +33,7 @@ final public function __construct(
     public static function withBackendUser(BackendUserAuthentication $backendUser): self
     {
         $dataHandler = GeneralUtility::makeInstance(DataHandler::class);
-        if (isset($backendUser->uc['copyLevels'])) {
+        if (isset($backendUser->uc['copyLevels']) && property_exists($dataHandler, 'copyTree')) {
             $dataHandler->copyTree = $backendUser->uc['copyLevels'];
         }
         return new static($dataHandler, $backendUser);