hideChannels on garageDevices doesn't seem to work
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### What issue do you have? Please be as thorough and explicit as possible.
I have followed your doc best I could.   Your plugin works great, my meross devices all show up.  One of them is a MSG200 garage device.  I am only using the 1st port and would like to hide the other 2 from HomeKit.  Here is my config.json (username/password removed)

{
    "name": "Meross",
    "username": “xxx",
    "password": “xxx",
    "platform": "Meross",
    "garageDevices": [
        {
            "serialNumber": "2008277717635290826748e1e92dbe58",
            "hideChannels": "1,2"
        }
    ]
}

Error from the log:

[11/29/2021, 4:35:40 PM] [Config] Initializing config platform...
[11/29/2021, 4:35:40 PM] [Config] Running in Service Mode
[11/29/2021, 4:35:40 PM] [Meross] Initializing Meross platform...
[11/29/2021, 4:35:40 PM] [Meross] Initialising plugin v7.2.0 | Node v16.13.0 | HB v1.3.8...
[11/29/2021, 4:35:40 PM] [Meross] Config entry [garageDevices] has an invalid entry which will be ignored.
[11/29/2021, 4:35:40 PM] [Meross] Plugin initialised. Setting up accessories....


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

Homebridge running in Docker on a Synology NAS.   

* Which version of Homebridge/HOOBS do you have?

1.3.8

* 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.

Docker on Synology NAS


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

7.2.0.  Fresh install.

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

MSG200.   Unable to hide unused channels

### Please paste any relevant logs below.
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```
[11/29/2021, 4:35:40 PM] [Config] Initializing config platform...
[11/29/2021, 4:35:40 PM] [Config] Running in Service Mode
[11/29/2021, 4:35:40 PM] [Meross] Initializing Meross platform...
[11/29/2021, 4:35:40 PM] [Meross] Initialising plugin v7.2.0 | Node v16.13.0 | HB v1.3.8...
[11/29/2021, 4:35:40 PM] [Meross] Config entry [garageDevices] has an invalid entry which will be ignored.
[11/29/2021, 4:35:40 PM] [Meross] Plugin initialised. Setting up accessories....
```
