fix unwanted title bar when special effect is enabled

Zhao Yuhang

2025-02-08 6f4ab6474fa81556b1d90f6f87f8322282d054db

 src/quick/qwkquickglobal.cpp

@@ -21,6 +21,7 @@
        }
        once = true;

        // @uri QWindowKit
        qmlRegisterType<QuickWindowAgent>(kModuleUri, 1, 0, "WindowAgent");
        qmlRegisterModule(kModuleUri, 1, 0);
    }