MiBoxer WL5 LED strip lights do not turn off completely via Tuya-HomeBridge
**Describe the bug**
I have a MiBoxer WL5 LED strip light controller connected to HomeKit.  The lights do not completely turn off when accessed via the iOS "Home" app.  I can use the Smart Life app or the physical remote control to turn off the lights.

The connection is like this:
WL5 --> Smart Life Smart Living iOS app --> Tuya IoT cloud --> HomeBridge 1.5.0 Tuya Platform plugin v1.5.0 --> HomeKit

This controller is RGBW with dimming.
In the iOS "Home" app, the controller is exposed as a light with a dimmer control and with selectable color presets.

The problem is this: since this is a dimmer control in HomeKit, I can only turn it off by setting brightness to 0%.  However, this does not completely turn off the lights; they stay on at a very dim level.

**Expected behavior**
I expect the lights to turn off completely when I set brightness to 0 in the iOS "Home" app.

**Screenshots**
n/a

**Device info
```
{
    "active_time": 1663701807,
    "biz_type": 18,
    "category": "dj",
    "create_time": 1632398984,
    "icon": "smart/icon/ay1544595242978Akat0/155892472070ed51f7468.png",
    "id": "eb39e53a6f1ba6d90dk5g3",
    "ip": "127.0.0.1",
    "lat": "0.0000",
    "local_key": "e9f2f40f53dea17f",
    "lon": "0.0000",
    "model": "WL5",
    "name": "Patio Lights",
    "online": true,
    "owner_id": "53018777",
    "product_id": "xz0eqflm5riksgqt",
    "product_name": "Controller",
    "status": [
        {
            "code": "switch_led",
            "value": false
        },
        {
            "code": "work_mode",
            "value": "scene"
        },
        {
            "code": "bright_value_v2",
            "value": 40
        },
        {
            "code": "temp_value_v2",
            "value": 0
        },
        {
            "code": "colour_data_v2",
            "value": "{\"h\":235,\"s\":940,\"v\":10}"
        },
        {
            "code": "countdown_1",
            "value": 0
        },
        {
            "code": "control_data",
            "value": ""
        }
    ],
    "sub": false,
    "time_zone": "-04:00",
    "uid": "az1635020020890K1OX3",
    "update_time": 1663703108,
    "uuid": "ea1f60da73310b7a"
}
```

**Device functions
```
{
            "category": "dj",
            "devices": [
                "eb39e53a6f1ba6d90dk5g3"
            ],
            "functions": [
                {
                    "code": "switch_led",
                    "desc": "switch led",
                    "name": "switch led",
                    "type": "Boolean",
                    "values": "{}"
                },
                {
                    "code": "work_mode",
                    "desc": "work mode",
                    "name": "work mode",
                    "type": "Enum",
                    "values": "{\"range\":[\"white\",\"colour\",\"scene\",\"music\"]}"
                },
                {
                    "code": "bright_value_v2",
                    "desc": "bright value v2",
                    "name": "bright value v2",
                    "type": "Integer",
                    "values": "{\"min\":10,\"scale\":0,\"unit\":\"\",\"max\":1000,\"step\":1}"
                },
                {
                    "code": "temp_value_v2",
                    "desc": "temp value v2",
                    "name": "temp value v2",
                    "type": "Integer",
                    "values": "{\"min\":0,\"scale\":0,\"unit\":\"\",\"max\":1000,\"step\":1}"
                },
                {
                    "code": "colour_data_v2",
                    "desc": "colour data v2",
                    "name": "colour data v2",
                    "type": "Json",
                    "values": "{\"h\":{\"min\":0,\"scale\":0,\"unit\":\"\",\"max\":360,\"step\":1},\"s\":{\"min\":0,\"scale\":0,\"unit\":\"\",\"max\":1000,\"step\":1},\"v\":{\"min\":0,\"scale\":0,\"unit\":\"\",\"max\":1000,\"step\":1}}"
                },
                {
                    "code": "countdown_1",
                    "desc": "countdown 1",
                    "name": "countdown 1",
                    "type": "Integer",
                    "values": "{\"unit\":\"\",\"min\":0,\"max\":86400,\"scale\":0,\"step\":1}"
                },
                {
                    "code": "control_data",
                    "desc": "control data",
                    "name": "control data",
                    "type": "Json",
                    "values": "{\"change_mode\":{\"range\":[\"direct\",\"gradient\"]}, \"bright\":{\"min\":0,\"scale\":0,\"unit\":\"\",\"max\":1000,\"step\":1}, \"temperature\":{\"min\":0,\"scale\":0,\"unit\":\"\",\"max\":1000,\"step\":1}, \"h\":{\"min\":0,\"scale\":0,\"unit\":\"\",\"max\":360,\"step\":1},\"s\":{\"min\":0,\"scale\":0,\"unit\":\"\",\"max\":255,\"step\":1},\"v\":{\"min\":0,\"scale\":0,\"unit\":\"\",\"max\":255,\"step\":1}}"
                }
            ],
            "product_id": "xz0eqflm5riksgqt"
        }
```

**Additional context**
WL5 info: https://miboxer.com/light/xqy/wl5.html
Smart Life account: smartlife@efitz.net
Tuya IoT cloud account: tuya@efitz.net
Tuya IoT cloud project code: p1663555433020gqess9

