HomeKit believes outlet is off when it’s on
### What issue do you have? Please be as thorough and explicit as possible.

I have a mss620br outdoor two prong outlet. When I turn it “on” with the home app, it shows the state is “on”. After 600 seconds, it’s state flips to an “off” state. The outlet remains on. In the Meross app, the outlet also shows an “on” state. 

I have it setup for local-only control with a 600 second polling period. I have experimented with other polling periods and each result in the same behavior, just with different intervals. 

The debug log is showing that every 600 seconds, a polling request is sent and immediately the outlet is instructed to turn “on” and then “off”. 

I do have hide channels “1,2” to ensure that the only visible outlet is the one I’m using. In case that matters. 

### Details of your setup.
* Do you use (1) Homebridge UI-X (2) Homebridge CLI or (3) HOOBS? 

Homebridge UI-X

* Which version of Homebridge/HOOBS do you have?

v1.3.8

* Which platform do you run Homebridge/HOOBS on (e.g. Raspberry Pi/Windows/HOOBS Box)? Please also mention your version of Node.js/NPM if known.

Ubuntu 20.04.3 LTS
node.js v14.18.2
npm v6.14.15

* Which version of this plugin (homebridge-meross) do you have? Has the issue started since upgrading from a previous version?

v7.4.1

* Which Meross devices do you have that are causing issues? Please include product models if applicable.

mss620br

### Please paste any relevant logs below.
```

12/25/2021, 5:39:50 PM] [Meross] [Balcony Left] sending update: {"header":{"from":"http://<omitted>/config","messageId":"<omitted>","method":"GET","namespace":"Appliance.System.All","payloadVersion":1,"sign":"<omitted>","timestamp":1640453990,"triggerSrc":"iOSLocal","uuid":"<omitted>"},"payload":{}}.
[12/25/2021, 5:39:53 PM] [Meross] [Balcony Left] incoming poll: {"header":{"messageId":"<omitted>","namespace":"Appliance.System.All","method":"GETACK","payloadVersion":1,"from":"/appliance/<omitted>/publish","timestamp":1640453987,"timestampMs":659,"sign":"<omitted>"},"payload":{"all":{"system":{"hardware":{"type":"mss620br","subType":"us","version":"4.0.0","chipType":"MT7686","uuid":"<omitted>","macAddress":"<omitted>"},"firmware":{"version":"4.1.32","homekitVersion":"4.1","compileTime":"2021/02/10-10:30:18","wifiMac":"<omitted>","innerIp":"<omitted>","server":"mqtt-us.meross.com","port":443,"userId":<omitted>},"time":{"timestamp":1640453987,"timezone":"America/Los_Angeles","timeRule":[[1615716000,-25200,1],[1636275600,-28800,0],[1647165600,-25200,1],[1667725200,-28800,0],[1678615200,-25200,1],[1699174800,-28800,0],[1710064800,-25200,1],[1730624400,-28800,0],[1741514400,-25200,1],[1762074000,-28800,0],[1772964000,-25200,1],[1793523600,-28800,0],[1805018400,-25200,1],[1825578000,-28800,0],[1836468000,-25200,1],[1857027600,-28800,0],[1867917600,-25200,1],[1888477200,-28800,0],[1899367200,-25200,1],[1919926800,-28800,0]]},"online":{"status":1,"bindId":"<omitted>","who":1}},"digest":{"togglex":[{"channel":0,"onoff":1,"lmTime":1640449813},{"channel":1,"onoff":1,"lmTime":1640449813},{"channel":2,"onoff":0,"lmTime":1640452917}],"triggerx":[],"timerx":[]}}}}.
[12/25/2021, 5:39:53 PM] [Meross] [Balcony Left] current state [on].
[12/25/2021, 5:39:53 PM] [Meross] [Balcony Left] current state [off].
```