“Tammy Faye,” which announced its closing less than a week after opening on Broadway, features music by Elton John, who is also a producer on the show. Elton John’s Broadway musical about the late Tammy Faye Messner, who was known as “the first lady of televangelism” when she was Tammy Faye Bakker in the 1970s and ’80s, is packing it …