I don't know if it's different for playoffs. ESPN has Doncics face for tomorrow. That must mean he has the ability to play. Normally if players are out they won't show the player. I tried to include a picture but it won't allow me to paste it here. If you go to ESPN and look at the games for tomorrow it has Mitchell and Doncic as the faces of the game.
https://www.espn.com/nba/scoreboard/_/date/20220418