"Person" contact flaky
<!-- BUG REPORTS THAT ARE NOT FILLED OUT COMPLETELY WILL BE CLOSED AUTOMATICALLY WITHOUT WARNING AND WILL NOT RECEIVE A RESPONSE. THE FORM IS HERE FOR A REASON. :). -->
<!-- Please ensure you read the documentation before creating a support request, especially the Troubleshooting page. -->
<!-- BUG REPORTS ABOUT BETA VERSIONS OF UNIFI / UBIQUITI FIRMWARE OR EARLY-ACCESS/BETA HARDWARE WILL BE CLOSED WITHOUT A RESPONSE. ALL BETA RELEASES FROM UBIQUITI ARE UNSUPPORTED -->

**Describe The Problem:**
<!-- A clear and concise description of what the issue is. -->
After the HKSV update the "Person" contact sensor has become inconsistent.  This actually worked perfectly before I switched over to HKSV.  It will trigger fine sometimes, but other times it will randomly stop working.  Normal motion sensor triggers fine.  Smart detection recordings also show up fine on unifi protect.   Restarting homebridge fixes the problem immediately but unknown when it will start failing again.   
  
**To Reproduce:**
<!-- Steps to reproduce the behavior. -->
Leave homebridge running for a day.  Observe that the "Person" contact sensor doesn't always trigger.  

**Logs:**
<!-- In order to be helpful, include the relevant logs from Homebridge, if applicable. -->


```
[2/23/2022, 3:24:42 PM] [homebridge-unifi-protect] Cloudkey [UCK-G2-PLUS] Front steps [UVC G3 Flex]: HomeKit Secure Video has recorded a 19 second motion event.
[2/23/2022, 3:26:20 PM] [homebridge-unifi-protect] Cloudkey [UCK-G2-PLUS] Doorbell [UVC G4 Doorbell]: HomeKit Secure Video has recorded a 21 second motion event.
[2/23/2022, 3:26:22 PM] [homebridge-unifi-protect] Cloudkey [UCK-G2-PLUS] Front steps [UVC G3 Flex]: HomeKit Secure Video has recorded a 26 second motion event.
[2/23/2022, 3:26:31 PM] [homebridge-unifi-protect] Cloudkey [UCK-G2-PLUS] Outside [UVC G4 Pro]: HomeKit Secure Video has recorded a 27 second motion event.
[2/23/2022, 3:26:44 PM] [homebridge-unifi-protect] Cloudkey [UCK-G2-PLUS] Front steps [UVC G3 Flex]: HomeKit Secure Video has recorded a 14 second motion event.
[2/23/2022, 3:26:44 PM] [homebridge-unifi-protect] Cloudkey [UCK-G2-PLUS] Front steps [UVC G3 Flex]: HomeKit Secure Video event recording ended abnormally: An unexpected protocol failure has occured.
[2/23/2022, 3:26:44 PM] [homebridge-unifi-protect] Cloudkey [UCK-G2-PLUS] Outside [UVC G4 Pro]: HomeKit Secure Video has recorded a 10 second motion event.
[2/23/2022, 3:26:44 PM] [homebridge-unifi-protect] Cloudkey [UCK-G2-PLUS] Outside [UVC G4 Pro]: HomeKit Secure Video event recording ended abnormally: An unexpected protocol failure has occured.
[2/23/2022, 3:27:20 PM] [homebridge-unifi-protect] Cloudkey [UCK-G2-PLUS] Doorbell [UVC G4 Doorbell]: HomeKit Secure Video has recorded a 45 second motion event.
[2/23/2022, 3:27:20 PM] [homebridge-unifi-protect] Cloudkey [UCK-G2-PLUS] Outside [UVC G4 Pro]: HomeKit Secure Video has recorded a 32 second motion event.
[2/23/2022, 3:27:20 PM] [homebridge-unifi-protect] Cloudkey [UCK-G2-PLUS] Outside [UVC G4 Pro]: HomeKit Secure Video event recording ended abnormally: An unexpected protocol failure has occured.
```


**Homebridge Configuration:**

```json
{
            "controllers": [
                {
                    "address": "192.168.1.xxx",
                    "mqttUrl": "mqtt://192.168.1.xxx:1883",
                    "password": "hunter2",
                    "username": "hb"
                }
            ],
            "options": [
                "Enable.Motion.SmartDetect",
                "Enable.Motion.SmartDetect.ObjectSensors"
            ],
            "platform": "UniFi Protect",
            "_bridge": {
                "username": "0E:AC:77:8B:64:50",
                "port": 40611
            }
        },
```
        
**Screenshots:**
<!-- If applicable, add screenshots to help explain your problem. -->

**Environment:**

* **Homebridge Version:** v1.4.0 <!-- homebridge -V -->
* **Node Version:** v16.13.1<!-- node -v -->
* **Homebridge-UniFi-Protect Plugin Version:** v5.5.0
* **UniFi Protect Version:** 1.21.2<!-- Read the Protect version line from https://unifi-controller/protect/settings -->
* **UniFi Protect Controller Type:** UCKgen2+ <!-- UCKgen2+, UDMP, UNVR, etc. -->
* **UniFi Protect Controller Firmware Version:** 2.3.15<!-- Read the firmware line from https://unifi-controller/settings/general -->
* **Apple Device and iOS / macOS / iPadOS / tvOS Version:** iPhone 12 15.1.1<!-- Type of Apple device you're using and associated OS version -->
* **Operating System and OS Version:** Docker <!-- Raspbian / Ubuntu / Debian / Windows / macOS / Docker -->

<!-- Click the "Preview" tab before you submit to ensure the formatting is correct. -->
