Property polling not work as expected
**Describe the bug**
From wireshark, I see mesh device `090615.switch.mesw2` (with gateway `xiaomi.wifispeaker.lx06`) is only polling `siid=2, piid=1`.

**Expected behavior**
Both `siid=2, piid=1` and `siid=3, piid=1` should be polling because it has left switch and right switch.

https://home.miot-spec.com/spec/090615.switch.mesw2

**Your config.json**
```json
        {
            "devices": [
                {
                    "name": "书房墙开",
                    "ip": "192.168.x.x",
                    "token": "xxx",
                    "deviceId": "xxx",
                    "model": "090615.switch.mesw2",
                    "pollingInterval": 10,
                    "deepDebugLog": true,
                    "buzzerControl": true,
                    "ledControl": true,
                    "childLockControl": true,
                    "modeControl": true
                }
            ],
            "platform": "miot"
        }
```
**Debug log**
```
[10/9/2022, 2:12:00 PM] [Homebridge UI] Homebridge restart request received
[10/9/2022, 2:12:00 PM] [Homebridge UI] UI / Bridge settings have not changed; only restarting Homebridge process
[10/9/2022, 2:12:00 PM] [Homebridge UI] Sending SIGTERM to Homebridge
[10/9/2022, 2:12:00 PM] Got SIGTERM, shutting down Homebridge...
[10/9/2022, 2:12:05 PM] [HB Supervisor] Homebridge Process Ended. Code: 143, Signal: null
[10/9/2022, 2:12:10 PM] [HB Supervisor] Restarting Homebridge...
[10/9/2022, 2:12:10 PM] [HB Supervisor] Starting Homebridge with extra flags: -I -P /var/lib/homebridge/node_modules --strict-plugin-resolution
[10/9/2022, 2:12:10 PM] [HB Supervisor] Started Homebridge v1.5.0 with PID: 6949
[10/9/2022, 2:12:12 PM] Loaded config.json with 0 accessories and 3 platforms.
[10/9/2022, 2:12:12 PM] Loaded 10 cached accessories from cachedAccessories.
[10/9/2022, 2:12:12 PM] ---
[10/9/2022, 2:12:13 PM] Loaded plugin: homebridge-miot@1.3.1
[10/9/2022, 2:12:13 PM] Registering platform 'homebridge-miot.miot'
[10/9/2022, 2:12:13 PM] ---
[10/9/2022, 2:12:13 PM] Loaded plugin: homebridge-yindl@0.12.1
[10/9/2022, 2:12:13 PM] Registering platform 'homebridge-yindl.YindlPlatform'
[10/9/2022, 2:12:13 PM] ---
[10/9/2022, 2:12:13 PM] Loading 3 platforms...
[10/9/2022, 2:12:13 PM] [YindlPlatform] Initializing YindlPlatform platform...
[10/9/2022, 2:12:13 PM] [miot] Initializing miot platform...
[10/9/2022, 2:12:13 PM] [miot] Initializing devices
[10/9/2022, 2:12:13 PM] [miot] [书房墙开] Got device configuration, initializing device with name: 书房墙开
Setup Payload:
X-HM://xxxxxxxx
Enter this code with your HomeKit app on your iOS device to pair with Homebridge:
                       
    ┌────────────┐     
    │ xxx-xx-xxx │     
    └────────────┘     
                       
[10/9/2022, 2:12:13 PM] Homebridge v1.5.0 (HAP v0.10.2) (Homebridge 7E5B) is running on port 51960.
[10/9/2022, 2:12:13 PM] [miot] [书房墙开] Model known: 090615.switch.mesw2!
[10/9/2022, 2:12:13 PM] [miot] [书房墙开] Initializing device!
[10/9/2022, 2:12:13 PM] [miot] [书房墙开] Using module class for device type Switch, indentified by miot spec! Not all features might work!
[10/9/2022, 2:12:13 PM] [miot] [书房墙开] Initializing device services
[10/9/2022, 2:12:13 PM] [miot] [书房墙开] Device services: [
  "switch",
  "switch",
  "switchturn",
  "switchturn",
  "setmode"
]
[10/9/2022, 2:12:13 PM] [miot] [书房墙开] Initializing device properties
[10/9/2022, 2:12:13 PM] [miot] [书房墙开] Device properties: [
  "switch:on",
  "switch3:on",
  "switchturn:turn",
  "switchturn5:turn",
  "setmode:backlight",
  "setmode:leftsmart",
  "setmode:rightsmart"
]
[10/9/2022, 2:12:13 PM] [miot] [书房墙开] Initializing device actions
[10/9/2022, 2:12:13 PM] [miot] [书房墙开] Successfully created a Switch device! It is a Unknown switch device.
[10/9/2022, 2:12:13 PM] [miot] [书房墙开] Initializing accessory!
[10/9/2022, 2:12:13 PM] [miot] [书房墙开] Accessory successfully initialized!
[10/9/2022, 2:12:13 PM] [miot] [书房墙开] Registering 1 accessories!
[10/9/2022, 2:12:13 PM] [miot] [书房墙开] Everything looks good! Initiating property polling!
[10/9/2022, 2:12:13 PM] [miot] [书房墙开] Device found: xiaomi.wifispeaker.lx06
[10/9/2022, 2:12:13 PM] [miot] [书房墙开] Found device model xiaomi.wifispeaker.lx06 does not match specified model 090615.switch.mesw2! Some services might not work!
[10/9/2022, 2:12:13 PM] [miot] [书房墙开] Setting up miot device!
[10/9/2022, 2:12:13 PM] [miot] [书房墙开] Device setup finished! Miot device ready!
[10/9/2022, 2:12:13 PM] [miot] [书房墙开] Connected to device: xiaomi.wifispeaker.lx06
[10/9/2022, 2:12:13 PM] [miot] [书房墙开] Doing initial property fetch.
[10/9/2022, 2:12:13 PM] [miot] [书房墙开] Starting property polling.
```

**Screenshots**
None.

**Additional context**
Relates to #348 
