MQE-1513: createData throws a useless error message during runtime when the entity does not exist

reverted changes
reworded message

Author: soumyau

dev/tests/unit/Magento/FunctionalTestFramework/DataGenerator/Handlers/PersistedObjectHandlerTest.php

@@ -40,7 +40,7 @@ public function testCreateEntityWithNonExistingName()
         $scope = PersistedObjectHandler::TEST_SCOPE;
 
         $exceptionMessage = "Entity \"" . $entityName . "\" does not exist." .
-            "\nException occurred parsing action at StepKey \"" . $entityStepKey . "\"";
+            "\nException occurred executing action at StepKey \"" . $entityStepKey . "\"";
 
         $this->expectException(TestReferenceException::class);
 

src/Magento/FunctionalTestingFramework/DataGenerator/Handlers/PersistedObjectHandler.php

@@ -101,7 +101,7 @@ public function createEntity(
         if ($retrievedEntity === null) {
             throw new TestReferenceException(
                 "Entity \"" . $entity . "\" does not exist." .
-                "\nException occurred parsing action at StepKey \"" . $key . "\""
+                "\nException occurred executing action at StepKey \"" . $key . "\""
             );
         }