ATLANTA (AP) — Trae Young didn’t attribute his first 50-point game to confidence gained from his first All-Star start. Belief in himself has never been a problem for the highscoring guard with a fondness for 30-foot jumpers. Young had a career-high 50 points and the Atlanta Hawks scored the last 10 points of the game to beat the Miami Heat 129-124 on Thursday night. Young made 18 of 19 free…