fix build with old win-sdk

Zhao Yuhang

2025-03-06 835e769f97eda4ff3ecc16ddca6d36c5496dc50d

 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;
    };

}