Marc Malkin Senior Film Awards, Events & Lifestyle EditorLong before Jo Ellen Pellman was cast in the starring role of Emma in Ryan Murphy’s movie adaptation of “The Prom,” she saw the original production of the Broadway musical.“I’m only 25, yet I still wish I had this story growing up,” Pellman says on Tuesday’s episode of the Variety and iHeart podcast “The Big Ticket.”“The Prom” is about a group of theater stars from New York who try to drum up some positive publicity for themselves by traveling to an Indiana town to help high school student Emma (Pellman) fight for her right to bring her girlfriend Alyssa (played by fellow queer actor Ariana DeBose) to prom.Pellman has always been out about being queer. “That’s something that I do not.