qmllint: aliased required property shouldn't be warned as missing

import QtQuick 2.15

Item {
    property alias req: inner.req  // should be required instead
    Item {
        id: inner
        required property var req  // aliased, shouldn't be required locally
    }
}

% qmllint /tmp/a.qml
Warning: /tmp/a.qml:5:5: Component is missing required property req from here
    Item {
    ^^^^