PHILADELPHIA — So now the Flyers have their J.D. Drew. They have their Eric Lindros in reverse. They have — or had, more accurately — Cutter Gauthier, who was supposed to be the gifted goal-scorer they’ve long lacked. He was their first-round draft pick in 2022. And he has been up there in Boston College for two years, living up to his billing, scoring 28 goals in just 47 games. And, just last week, across the Atlantic Ocean in Gothenburg, Sweden, helping the U.S. under-20 team win the gold medal at the World Junior Championship. And now he will be a member of the Anaheim Ducks. Because he wan…