Charlotte d’Amboise, right, rehearses for “The Last Supper” at the South Orange Performing Arts Center. In 1995 — after she was in “The Mask” but before her breakthrough role in “There’s Something About Mary” — Cameron Diaz co-starred with Jason Alexander, Nora Dunn, Ron Perlman and others in the film “The Last Supper.” The black comedy didn’t make much of an impact. But it has been reimagined, improbably, as a musical, written by Jeremy Desmon and Jeff Thomson, and that musical was presented for the first time at the South Orange Performing Arts Center on July 27, and will run through Aug. 7….