PHILADELPHIA — OG Anunoby’s absence left massive shoes to fill. The Knicks were fully up for the challenge. They got help from the starting lineup, as Mikal Bridges finished with 23 points — his second-highest output of the postseason. They got help from the bench, as Landry Shamet — who had been out of the rotation previously — stepped up with 15 points and helped close the game. There were bigger responsibilities up-and-down the roster. And the Knicks fulfilled them en route to their 108-94