[Support] The lack of "no response" in Home app while devices are offline
Normally when a generic Homekit device is offline, the Home app will say that the device gives "no response". When I take my Shelly Dimmer 2 offline (by cutting it's power supply), I get to keep switching the state in both the Home app and the Homebridge browser interface. Is this behaviour that we should expect or is it a bug?

When I shut Homebridge down, then I get the expected "no response" in the Home app. I tried restarting, resetting as well as using a different Homebridge instance on a different server.

 - Shelly device(s): Shelly Dimmer 2
 - Plugin version: v0.16.0
 - Device running homebridge: Raspberry Pi
