[REG 6.3->6.4] lost the ability to test HandlerPoint.pressedButtons (flags) using & operator

qtdeclarative/examples/quick/pointerhandlers/components/MouseFeedbackSprite.qml has this:

        Image {
            source: "images/mouse_left.png"
            visible: handler.point.pressedButtons & Qt.LeftButton
        }

It's ok in 6.3.1, 6.2 and earlier, but in 6.4 and later it generates TypeError:

qrc:/qt/qml/pointerhandlers/components/MouseFeedbackSprite.qml:27: TypeError: Type error

The property is from here

class Q_QUICK_PRIVATE_EXPORT QQuickHandlerPoint {
    Q_GADGET
...
    Q_PROPERTY(Qt::MouseButtons pressedButtons READ pressedButtons)