Initialize KNX expose value (#49623)
Initialize KNX expose value (#49623)

* simplify value extraction

* allow 0/1 and "True" / "False" for binary exposes

* initialize ExposeSensor value

* handle binary states

* use default for initialization
aronsky/home-assistant,Danielhiversen/home-assistant,mezz64/home-assistant,FreekingDean/home-assistant,toddeye/home-assistant,toddeye/home-assistant,jawilson/home-assistant,w1ll1am23/home-assistant,aronsky/home-assistant,jawilson/home-assistant,GenericStudent/home-assistant,rohitranjan1991/home-assistant,sander76/home-assistant,kennedyshead/home-assistant,lukas-hetzenecker/home-assistant,GenericStudent/home-assistant,FreekingDean/home-assistant,w1ll1am23/home-assistant,Danielhiversen/home-assistant,home-assistant/home-assistant,sander76/home-assistant,home-assistant/home-assistant,rohitranjan1991/home-assistant,rohitranjan1991/home-assistant,lukas-hetzenecker/home-assistant,mezz64/home-assistant,nkgilley/home-assistant,kennedyshead/home-assistant,nkgilley/home-assistant