By the time Aleksander Barkov was set up at the right faceoff circle with an extra skater on the ice and the Florida Panthers one goal away from an astonishing comeback Saturday, the captain had long been certain he and his teammates were going to pull off the nearly unthinkable. The New Jersey Devils’ four-goal lead had shrunk to one in less than 15 minutes and the Panthers were on the verge of taking the Devils to overtime. Barkov waited patiently in one of his sweet spots while the clock ticked toward the final minute. Florida has found a knack for scoring with its goaltender pulled this ye…