Fix top border & misc tweaks (#167)

Yuhang Zhao

2025-03-04 1d08c8b1144a62887a2b73903eef4129dc9be207

 src/core/contexts/win32windowcontext_p.h

@@ -73,7 +73,9 @@
        // WM_MOUSELEAVE.
        bool mouseLeaveBlocked = false;

        // For emulating traditional icon button behavior
        uint64_t iconButtonClickTime = 0;
        int iconButtonClickLevel = 0;
    };

}