Update Plugwise (#28237)

* Plugwise update

* Fix DEFAULT_NAME

* Fix pylint errors

* Remove showing of DHW-status

* Remove `if not None` where possible

* Forgot to remove dhw-related code

* Updated w.r.t. comments from MartinHjelmare

* Remove the illuminance attribute - move to sensor

* Update homeassistant/components/plugwise/climate.py

Co-Authored-By: Martin Hjelmare <marhje52@kth.se>

* Breaking lines

* Remove thermostat_temperature

* Try fix lint errors.

* Remove spaces

* Remove more spaces