LOS ANGELES — The celebration was more of a playoff moment in April or May or even June. It also was a moment desperately, desperately needed by the Miami Heat. Finally a hero for the Heat this season, with Klay Thompson draining a game-winning 3-pointer off an inbounds play with 3.3 seconds to play and the Heat down two. So, for a night, misery stepped aside, and instead a 117-116 overtime ...