Getty Images / Backgrid USA Timothée Chalamet was back at Madison Square Garden to cheer on the New York Knicks during their second Eastern Conference Finals game against the Cleveland Cavaliers on Thursday night (May 21). The 30-year-old Oscar-nominated actor sat courtside in “celebrity row” alongside Tracy Morgan as the Knicks continued their impressive playoff run. On Thursday, the Knicks earned their ninth straight postseason win, defeating …