Not possible to bind Action's enabled property to activeFocus of TextArea

import QtQuick
import QtQuick.Controls
import QtQuick.Layouts

ApplicationWindow {
    id: window
    width: 380
    height: 320
    visible: true

    menuBar: MenuBar {
        Menu {
            title: qsTr("Edit")

            Action {
                text: qsTr("Some Other Action")
            }
            Action {
                text: qsTr("Select All")
                shortcut: StandardKey.SelectAll
                enabled: mainTextArea.activeFocus
                onTriggered: mainTextArea.selectAll()
            }
        }
    }

    SplitView {
        anchors.fill: parent

        TextArea {
            SplitView.minimumWidth: 100
        }

        TextArea {
            id: mainTextArea
            text: "Test text"

            SplitView.fillWidth: true
        }
    }
}