MIAMI — Mike Brown went back to his big lineup in Game 3. With Miles McBride unavailable for personal reasons — a league source said there was a death in his family — Ariel Hukporti rejoined the starters Sunday for a taller configuration. It matched the philosophy Brown outlined a few days prior, when the coach said he’ll adjust based on the opponent. In the opener, the Cavaliers had Jarrett Allen and Evan Mobley — and Brown responded with a big frontcourt. In the second game, the Celtics were