QmlDesigner: Always reset the items in the render loop

To be sure the are not any more dirty. This can be no harm.

Change-Id: I861243f1f4435b0dbdc2a6373ebfdfef12fb2627
Reviewed-by: Tim Jenssen <tim.jenssen@digia.com>

share/qtcreator/qml/qmlpuppet/qml2puppet/instances/qt5rendernodeinstanceserver.cpp

@@ -102,6 +102,8 @@ void Qt5RenderNodeInstanceServer::collectItemChangesAndSendChangeCommands()
                 m_dirtyInstanceSet.clear();
             }
 
+            resetAllItems();
+
             slowDownRenderTimer();
             nodeInstanceClient()->flush();
             nodeInstanceClient()->synchronizeWithClientProcess();