Add Entity ID to "config/device_registry/list"

So trying to do the roundabout way of connecting area with states is made even harder by the fact that “config/device_registry/list” and “get_states” don’t share a common ID. Only “friendly name” is the same, which can turn bad real quick if I happen to have several devices called “temperature” in different areas.
The best would have been if Entity ID was available in both results so that it will be a unique match.

This is more of a bug-report than a feature request in my eyes.