force glove recalibration on backend initialize

Source/SenseGloveBackend/Private/SGBackend/SGBackend.cpp

@@ -39,6 +39,7 @@
 
 #include "SGConnect/SGConnect.h"
 #include "SGCore/SGDeviceList.h"
+#include "SGCore/SGHandLayer.h"
 #include "SGLog/SGLog.h"
 
 struct USGBackend::FImpl
@@ -114,6 +115,10 @@ bool USGBackend::InitializeBackend()
         FSGDeviceList::Dispose();
         FSGDeviceList::Reinitialize();
 
+        // Force reset the hands calibration.
+        FSGHandLayer::ResetCalibration(false);
+        FSGHandLayer::ResetCalibration(true);
+
         bBackendInitialized = true;
 
         return true;