fix window reopen issue (#179)

Yuhang Zhao

2025-05-09 e9999fa61ea0ffa602c69e10e54996b3a636a5e6

 examples/shared/widgetframe/windowbar_p.h

@@ -29,8 +29,9 @@
            IconButton,
            MenuWidget,
            TitleLabel,
            MinimumButton,
            MaximumButton,
            PinButton,
            MinimizeButton,
            MaximizeButton,
            CloseButton,
        };