Theater review THE LOST BOYS Two hours and 40 minutes, with one intermission. At the Palace Theatre, 160 W. 47th Street. At long last, a vampire musical that doesn’t suck. A captivating and moody rock show about teenage fangst, “The Lost Boys,” flew open Sunday night at the Palace Theatre and brought an end to the decades-old curse unleashed by a string of unfortunate aughts Broadway mega-flops: “Dracula,” “ Dance of the Vampires ” and “ Lestat .” That tacky trilogy of terror has been the