QmlDesigner: restore auxiliary data when file is loaded

Change-Id: Iacf8ef63d8e841a637fadd5eb78ed8facd2cb5c5
Reviewed-by: Tim Jenssen <tim.jenssen@qt.io>

src/plugins/qmldesigner/designercore/model/viewmanager.cpp

@@ -133,6 +133,7 @@ void ViewManager::attachRewriterView()
 
         currentModel()->setRewriterView(view);
         view->reactivateTextMofifierChangeSignals();
+        view->restoreAuxiliaryData();
     }
 
     qCInfo(viewBenchmark) << "RewriterView:" << time.elapsed();