ThinQ1 Status updates retrieving stale data for washer/dryer.
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**Describe The Bug:**
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The plugin will poll status of washer until it completes one cycle and goes into power off state. After this, all subsequent updates show no change, even though washer and LG app continue to correctly operate and update status. It appears from debug log like the api is being called but never returns anything new.

As far as I know, previous versions to 1.2.10 also have this issue. I have never gotten this plugin to work for more than a single load of laundry without having to restart the plugin.
**To Reproduce:**
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Enable for ThinQ1 washer and complete 2 cycles. After the first cycle, polled status will never change again until child bridge is restarted.
**Expected behavior:**
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Continued polling…
**Logs:**
(Note: this pair of messages repeats as far back as I can see in the log and - as here - 47 times during the load that is running - and continues after. the LG app shows the correct status and time remaining the whole time.)
```
[05/11/2021, 12:37:46] [homebridge-lg-thinq] [request] post https://aic.lgthinq.com:46030/api/rti/rtiResult
[05/11/2021, 12:37:46] [homebridge-lg-thinq] [Washer] Received snapshot:  {"washerDryer":{"state":"POWEROFF","preState":"POWEROFF","remoteStart":"REMOTE_START_OFF","initialBit":"INITIAL_BIT_OFF","childLock":"CHILDLOCK_OFF","TCLCount":0,"reserveTimeHour":0,"reserveTimeMinute":0,"remainTimeHour":0,"remainTimeMinute":0,"initialTimeHour":0,"initialTimeMinute":0,"soilWash":"NO_SOILWASH"},"raw":{"State":null,"Remain_Time_H":null,"Remain_Time_M":null,"Initial_Time_H":null,"Initial_Time_M":null,"APCourse":null,"Error":null,"Soil":null,"SpinSpeed":null,"WaterTemp":null,"RinseOption":null,"DryLevel":null,"Reserve_Time_H":null,"Reserve_Time_M":null,"Option1":null,"Option2":null,"Option3":null,"PreState":null,"SmartCourse":null,"TCLCount":null,"OPCourse":null,"LoadLevel":null}}
```

**Plugin Config:**

```
        {
            "country": "US",
            "language": "en-US",
            "auth_mode": "token",
            "refresh_token": "*****",
            "username": "",
            "password": "",
            "devices": [
                {
                    "id": "*****",
                    "name": "Dryer",
                    "type": "DRYER",
                    "washer_door_lock": true
                },
                {
                    "id": "*****",
                    "name": "Washer",
                    "type": "WASHER",
                    "washer_trigger": true
                }
            ],
            "thinq1": true,
            "refresh_interval": 60,
            "platform": "LGThinQ",
            "_bridge": {
                "username": "0E:14:13:4A:4D:75",
                "port": 36445
            }
```

**Screenshots:**
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**Environment:**
Raspbian RPi 3b - homebridge latest.
* **Plugin Version**: 1.2.10 (test)
* **Homebridge Version**:  1.3.5 <!-- homebridge -V -->
* **Node.js Version**: 14.17.4 <!-- node -v -->
* **NPM Version**: 7.20.3<!-- npm -v -->
* **Operating System**: Raspbian <!-- Raspbian / Ubuntu / Debian / Windows / macOS / Docker / hb-service -->

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