Debugger: prefer newer debuggers on initialization

Change-Id: If8a6af6b00006eca68ddcb49f900f0135979be22
Reviewed-by: hjk <hjk@qt.io>
Reviewed-by: Christian Stenger <christian.stenger@qt.io>

src/plugins/debugger/debuggeritemmanager.cpp

@@ -675,6 +675,7 @@ void DebuggerItemManagerPrivate::autoDetectCdbDebuggers()
         item.setCommand(cdb);
         item.setEngineType(CdbEngineType);
         item.setUnexpandedDisplayName(uniqueDisplayName(tr("Auto-detected CDB at %1").arg(cdb.toUserOutput())));
+        item.reinitializeFromFile(); // collect version number
         m_model->addDebugger(item);
     }
 }