Use brilliant workaround to show Windows 10 top border

Sine Striker

2023-12-24 46285db399f75154ad6c451e12f2cae2e59ace25

 src/core/contexts/win32windowcontext_p.h

@@ -38,8 +38,13 @@
        bool needBorderPainter() const;
        int borderThickness() const;

        void resume(const QByteArray &eventType, void *message,
                    QT_NATIVE_EVENT_RESULT_TYPE *result) override;

    protected:
        void winIdChanged(QWindow *oldWindow) override;
        void winIdChanged() override;
        bool windowAttributeChanged(const QString &key, const QVariant &attribute,
                                    const QVariant &oldAttribute) override;

    public:
        bool windowProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam, LRESULT *result);