[Bug]: Can't use camera as motion detector
### What happened?

Was having some issues with my T8420 floodlight camera and this plugin so I removed it and just used the base station element instead.  This massively improved HomeBridge performance and it seems guard mode is now working well.  I just tried to re-add the camera as a motion sensor only but it still appears in HomeKit as a (broken) camera and causes all sorts of HomeBridge slowdowns even though it's set to be unbridged.

How can I get this configured as a motion sensor only as I'd really like access to the floodlight light switches.

### Device Type

Floodlight (Supported)

### Plugin Version

beta (Best Effort)

### HomeBridge Version

v1.4.x (Supported)

### NodeJS Version

v16 (Supported)

### Operating System

Mac OS X 11+ (Supported)

### Relevant log output

```shell
N/A
```
