[idd] recovery: restore fallback display

Add a protocol-independent recovery channel outside LGMP so clients can
request a usable guest display even when transport versions differ.

Synchronize recovery state with the helper across driver restarts and
restore the configured topology without persisting temporary changes.

idd/LGIdd/display/CMonitorManager.h

@@ -75,7 +75,7 @@ private:
   std::atomic<LONG> m_replugQueued = 0;
 
 public:
-  void Create(UINT connectorIndex, IDDCX_ADAPTER adapter,
+  bool Create(UINT connectorIndex, IDDCX_ADAPTER adapter,
     std::vector<BYTE> edid, CDeviceContext * owner);
   ReplugAction Replug();
   void RequestMode(const CSettings::DisplayMode& mode);