qmldesigner: increase restart timer

It was looping in debug on Windows so heaviliy
that it brought the system to hold then.

Change-Id: I10eccb6c48a22ba7a9de912a912f957066bf9c09
Reviewed-by: Tim Jenssen <tim.jenssen@qt.io>

src/plugins/qmldesigner/designercore/instances/nodeinstanceview.cpp

@@ -295,9 +295,9 @@ void NodeInstanceView::modelAboutToBeDetached(Model * model)
 void NodeInstanceView::handleCrash()
 {
     qint64 elaspsedTimeSinceLastCrash = m_lastCrashTime.restart();
-    qint64 forceRestartTime = 2000;
+    qint64 forceRestartTime = 5000;
 #ifdef QT_DEBUG
-    forceRestartTime = 4000;
+    forceRestartTime = 10000;
 #endif
     if (elaspsedTimeSinceLastCrash > forceRestartTime)
         restartProcess();