MILWAUKEE—Trae Young remains as poised as ever in hostile environments in his first postseason. Young scored 48 points, Clint Capela converted a go-ahead putback with 29.8 seconds left and the Atlanta Hawks beat the Milwaukee Bucks 116–113 on Wednesday night to open the Eastern Conference finals. The Hawks improved to 6–2 in road playoff games this year and handed the Bucks their first home loss of the postseason. “Ever since I was in middle school, when I was going on the road in middle school, I always loved playing on the road,” said Young, who was two points off his career high. “I loved playing against an opposing crowd, an opposing team. It feels like you’re really with your team, and it’s just them in the building. I think that really brings our group together.” Game 2 is Friday night in Milwaukee. Giannis Antetokounmpo had 34 points, 12 rebounds and …