Totally fix top border issue on Win10 for QtWidgets

Sine Striker

2023-12-26 6b2d31247dc2c2804e571b31a71c8a423c1db9d4

 src/core/windowagentbase.h

@@ -24,7 +24,6 @@
            Minimize,
            Maximize,
            Close,
            NumSystemButton,
        };
        Q_ENUM(SystemButton)