Add message debug entry for DPI change events

WM_GETDPISCALEDSIZE and WM_DPICHANGED.

Pick-to: 6.2
Change-Id: I0614b0f552e52fc77d026dbc7e8c13b05f7d0e9e
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>

src/gui/platform/windows/qwindowsguieventdispatcher.cpp

@@ -209,6 +209,12 @@ messageDebugEntries[] = {
     {WM_POINTERROUTEDAWAY, "WM_POINTERROUTEDAWAY", true},
     {WM_POINTERROUTEDRELEASED, "WM_POINTERROUTEDRELEASED", true},
 #endif // WM_POINTERROUTEDTO
+#ifdef WM_GETDPISCALEDSIZE
+    {WM_GETDPISCALEDSIZE, "WM_GETDPISCALEDSIZE", true},
+#endif
+#ifdef WM_DPICHANGED
+    {WM_DPICHANGED, "WM_DPICHANGED", true},
+#endif
 };
 
 static inline const MessageDebugEntry *messageDebugEntry(UINT msg)