The Florida Panthers, with their massive lead in the Eastern Conference and Atlantic Division, know they won’t have many chances left to play in potential postseason atmospheres before the 2022 Stanley Cup playoffs begin next month, but they got one Saturday and thrived in it. After needing comebacks in each of their last four games, the Panthers never trailed the Nashville Predators and won 4-1 in Tennessee. Considering the opponent and the circumstances, the win was one of Florida’s most impressive in the last month. The Predators were only one of four teams with a winning record left on the…