There have been 11 players in Vegas Golden Knights history who have scored a playoff overtime goal. Only one has done it more than once. Find any clutch-inspired moniker you can assign Brett Howden, and he’s been that. The Knights winger scored the third overtime winner of his postseason career Wednesday in the 5-4 double OT thriller against the Utah Mammoth to give his team a 3-2 series lead. It’s not just the winning goal that put Howden in rarefied air. His play the last two games is why the Knights are a win away from moving on to the second round, which the Knights can do Friday in Game 6 at Delta Center. Howden has three goals the last two games — two of them short-handed, the other the tying goal with 10 minutes left in regulation of Game 4 that the Knights went on to win in overtime . “Just trying to put puck to the net,” said an exhausted Howden after playing 20 minutes, 29 seconds Wednesday.…