Improve type hint in cast media_player entity (#77025)
Improve type hint in cast media_player entity (#77025)

* Improve type hint in cast media_player entity

* Update docstring
nkgilley/home-assistant,w1ll1am23/home-assistant,mezz64/home-assistant,nkgilley/home-assistant,mezz64/home-assistant,w1ll1am23/home-assistant