add isFixedSize implementation

Yuhang Zhao

2023-12-05 d02f3b0bc32f711bf33a7fd288185963e9e96189

 src/quick/quickitemdelegate.cpp

@@ -33,4 +33,12 @@
        return QRectF(originPoint, size).toRect();
    }

    QWindow *QuickItemDelegate::hostWindow(QObject *host) const {
        return static_cast<QQuickWindow *>(host);
    }

    bool QuickItemDelegate::isHostSizeFixed(QObject *host) const {
        return false;
    }

}