Fixed error with mass creation, when elements on different level had the same name

Fixes issue #1104

Author: jbtronics

src/Controller/AdminPages/BaseAdminController.php

@@ -380,7 +380,7 @@ protected function _new(Request $request, EntityManagerInterface $em, EntityImpo
             }
             $em->flush();
 
-            if (count($created_count) > 0) {
+            if (count($results) > 0) {
                 $this->addFlash('success', t('entity.mass_creation_flash', ['%COUNT%' => $created_count]));
             }
 

src/Services/ImportExportSystem/EntityImporter.php

@@ -167,7 +167,7 @@ public function massCreation(string $lines, string $class_name, ?AbstractStructu
         }
 
         //Only return objects once
-        return array_values(array_unique($valid_entities));
+        return array_values(array_unique($valid_entities, SORT_REGULAR));
     }
 
     /**