ORLANDO — He went 32 days without playing a basketball game after suffering an ankle injury in the first game of the playoffs. So when Gordon Hayward returned to the Celtics’ lineup on Saturday night for the first time since Aug. 17, there was some huffing and puffing taking place. “The first five minutes hit me, for sure,” said Hayward, after helping the Celtics win Game 3 of the Eastern Conference finals, 117-106, over the Miami Heat.