Shelly Firmware 1.8.3. wrong status indications in HomeKit
**Describe the bug**
Not sure if this happened on Shelly FW 1.8.0 as well, but for sure it has been working perfect in 1.7.x.
For the Shelly 2.5 in roller shutter mode the indications for opening and closing status in HomeKit are either lagging behind or they are too quick and therefore wrong. 
Example: A fully opened shutter is shown as "open" on the Homekit tile which is ok. But open pushing that tile, the roller shutter starts to move downwards, and the indication changes to "closed" immediately. This is not correct, as the shutter is still moving. In former FW versions (or plugin versions?) there has been a spinning wheel on that tile and there was a "closing..." indication during movement which changed to "closed" after the shutter stopped in closed position. 
This is gone now, and the same applies for the opening procedure.

Sometimes when the shutter is operated with the wall switch, the movement is not indicated at all on the Homekit tile, and the status is updated after a few minutes only or only after a force quit and restart of the home.app.

**Log output**
None.

**Environment:**
 - Shelly device(s): Shelly 2.5
 - Plugin version: 0.14.0
 - Device running homebridge: Raspberry Pi with HOOBS installation 3.2.6. all up to date.
