Battery entity unknown after FW update to 2.21

[riesi77]

While with 2.20 the battery entity on home assistant (using the 3.0.0 beta 7) was working, it is now (after fw update to 2.21) unknown. The other entities are correct.

[jonasniesner]

There is already a fix for it in py-opendisplay and it will be fixed with the next ha integration release