Add QtContext WinIdChange workaround

Sine Striker

2023-12-18 d3d7430ec9afb94abaf78fa2c9edd9d9f946881c

 src/core/contexts/win32windowcontext.cpp

@@ -780,7 +780,7 @@
        g_wndProcHash->insert(hWnd, ctx);
    }

    static inline void removeManagedWindow(HWND hWnd, bool restore) {
    static inline void removeManagedWindow(HWND hWnd) {
        // Remove window handle mapping
        if (!g_wndProcHash->remove(hWnd))
            return;
@@ -789,11 +789,6 @@
        if (g_wndProcHash->empty()) {
            WindowsNativeEventFilter::uninstall();
        }

        // Restore window proc
        if (restore) {
            ::SetWindowLongPtrW(hWnd, GWLP_WNDPROC, reinterpret_cast<LONG_PTR>(g_qtWindowProc));
        }
    }

    Win32WindowContext::Win32WindowContext() : AbstractWindowContext() {
@@ -801,7 +796,7 @@

    Win32WindowContext::~Win32WindowContext() {
        if (windowId) {
            removeManagedWindow(reinterpret_cast<HWND>(windowId), false);
            removeManagedWindow(reinterpret_cast<HWND>(windowId));
        }
    }

@@ -897,9 +892,9 @@
        return getWindowFrameBorderThickness(reinterpret_cast<HWND>(windowId));
    }

    void Win32WindowContext::winIdChanged(QWindow *oldWindow, bool destroyed) {
    void Win32WindowContext::winIdChanged(QWindow *oldWindow) {
        if (oldWindow) {
            removeManagedWindow(reinterpret_cast<HWND>(windowId), !destroyed);
            removeManagedWindow(reinterpret_cast<HWND>(windowId));
        }

        if (!m_windowHandle) {