A star of the 1980s hit TV show “The Dukes of Hazzard” was barred from performing in a local production of “42nd Street” yesterday after he was charged with sexually assaulting a fellow actor in the musical — and authorities say she is not the only woman in the cast who has complained. Tom Wopat, 65, of New York and Nashville, pleaded not guilty to indecent assault and battery and drug possession yesterday, a day after he was arrested on a warrant moments after leaving the theater at Waltham High School.