PHOENIX—Tyler Herro had his best scoring game of the season. Duncan Robinson did, too. It all added up to a blowout win for the Miami Heat, who tied a franchise record with 22 3-pointers in a 123–100 victory over the NBA-leading Phoenix Suns on Saturday night. Herro poured in 33 points while Robinson added 27. Both players came off the bench for the short-handed Heat, who had 11 players on the inactive list, including star guard Jimmy Butler. “I just really continue to commend our group for staying in the moment, focusing on solutions and figuring out a way to improve and play good enough to win,” Heat coach Erik Spoelstra said. “One at a time.” The Heat made 50 percent of their 44 attempts from 3-point range. Robinson had a particularly good night, making eight 3s on 16 attempts, including a pair in the fourth quarter that turned back …