Unregister key delays on closing KBM windows (#6583)

src/modules/keyboardmanager/ui/EditKeyboardWindow.cpp

@@ -338,6 +338,7 @@ void createEditKeyboardWindow(HINSTANCE hInst, KeyboardManagerState& keyboardMan
     hwndLock.lock();
     hwndEditKeyboardNativeWindow = nullptr;
     keyboardManagerState.ResetUIState();
+    keyboardManagerState.ClearRegisteredKeyDelays();
 
     // Cannot be done in WM_DESTROY because that causes crashes due to fatal app exit
     xamlBridge.ClearXamlIslands();