PHILADELPHIA — Spurred by their desire to honor their captain in his 1,000th game, the Flyers overcame a third-period slump to beat the Nashville Predators, 5-4, breaking a three-game losing streak. With the excitement from Claude Giroux’s milestone game celebration still buzzing through the Wells Fargo Center, the Flyers got off to a fast start. They flew to the puck and approached battles with an energy not seen yet this season. And when Zack MacEwen dropped the gloves seven minutes in, the place exploded. Seconds after he entered the penalty box, Travis Sanheim scored the first goal. The in…