2215F8: Battery temperature?

```
{ "hdr": "700", "fcm1": true, "dbg": true, "cmd": {"22": "15F8"}, "freq": 30,
  "signals": [
    {"id": "COROLLAHYBRID_B_T", "path": "Battery", "fmt": { "len": 16, "max": 6513, "min": -40, "div": 10, "add": -40, "unit": "celsius" }, "name": "Battery temperature"}
  ]},
```

Responds with `708037F2231` on a 2024 model.