Photo: Michael M. Santiago/Getty Images With the grim anniversary of 9/11 just days away, Andrew Cuomo went after mayoral front-runner Zohran Mamdani for appearing on the show of megapopular Twitch streamer Hasan Piker, who once said, “America deserved 9/11.” On Tuesday, Cuomo appeared near Ground Zero alongside a 9/11 first responder and his family, in front of a pair of poster boards that showed a photo of Piker and the 9/11 quote and another that showed Mamdani and Piker clasping hands and