Fix NSWindowProxy::setSystemButtonVisible not taking effect (#175)

李威 wei.li

2025-04-21 469c975a708ed86c834b59ed751a4548c693a7b9

 examples/shared/widgetframe/windowbar_p.h

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