Predbat needs reboot when car unplugged with Ohme integration

[murkle]

When the car is unplugged PredBat doesn't update its plan unless Home Assistant is restarted, see https://github.com/dan-r/HomeAssistant-Ohme/issues/91

Not sure if it's the Ohme integration or PredBat at fault - is there anything I can do to help diagnose this? 🙏