Snapshot not showing on Home.app on Mac OS
<!--
Please DO NOT DELETE THIS TEMPLATE or your issue may be closed immediately.
Before opening an issue, search for open and closed GitHub issues that match your situation.

If this is a Live Stream issue please go back and use the Live Streaming issue template.
-->

# Bug Report

### Describe the Bug
I have a Rind Doorbell and it's working on all iOS devices including my Apple Watch. But on the Mac it will stream the video but the snapshot function is not working. When ik stop the live streaming the snapshot shows 

### Expected behavior
I would expect a request in the Homebridge log when I leave the Home.app open in the Mac. When I do this on i.e. my iPad, then I see a a few second a new snapshot. 

### Screenshots/Logs
<img width="449" alt="Screenshot 2021-04-10 at 13 44 13" src="https://user-images.githubusercontent.com/24613800/114268771-35048480-9a03-11eb-9c4a-e03686956ce8.png">

### Homebridge Ring Config
```
{
            "refreshToken": "secret",
            "hideDoorbellSwitch": true,
            "hideCameraMotionSensor": false,
            "hideCameraSirenSwitch": true,
            "hideInHomeDoorbellSwitch": true,
            "hideAlarmSirenSwitch": true,
            "hideUnsupportedServices": true,
            "platform": "Ring",
            "_bridge": {
                "username": "XX:XX:XX:XX:XX:XX",
                "name": "Ring",
                "port": 51488
            }
        },


### Environment
 - OS: Raspbian
 - Node.js: v14.16.0
 - NPM: v6.14.11
 - homebridge-ring: 9.16.0
 - homebridge: 1.3.4

