If Chita Rivera ever wants a quick reminder of her past, she only needs to walk down a hall and knock on Michelle Veintimilla’s Broadway dressing room. There she’ll find a smiling, effervescent 22-year-old just out of school who is a spitting image of the theater icon when she was just starting out. Veintimilla plays a younger version of Rivera’s character in “The Visit,” the Tony Award-nominated musical with a story by Terrence McNally and songs by John Kander and Fred Ebb.