Versionless QtQuick.Controls 2 import does not work

The following example fails:

import QtQuick
import QtQuick.Controls

Window {
}

The error message is:

QQmlApplicationEngine failed to load component
qrc:/main.qml:2:1: module "QtQuick.Controls" is not installed

If I change the QtQuick.Controls import to be versioned, it works fine:

import QtQuick
import QtQuick.Controls 2.12

Window {
}

Most likely due to Qt Quick Controls 2 having a special install target, since it was previously in name conflict with Qt Quick Controls 1 which was still supported.