[Bug]  Auto Off does not update switch state in Homebridge
**Describe the bug**
I have a Shelly 2.5 that I use to control a 2-speed extractor fan.
Both switches are set up to turn off after 15 minutes.
Once they've switched off, the switch state in Homebridge remains as "On".

**Environment:**
 - Shelly device(s): Shelly 2.5 (20211109-125214/v1.11.7-g682a0db)
 - Plugin version: 0.19.1
 - Device running homebridge: Raspberry Pi
