I’ve heard enough from Jessica Chastain to believe she simply wants to be treated like one of the guys. The problem with that is if your only goal is to be like everyone else, you’ll never be better than anyone else. “Ava” (2020) retraces the steps of “Atomic Blonde” by building a mediocre spy thriller around the novelty of a female assassin. Chastain’s subplot (complicated family and substance-abuse baggage) is also somewhat novel, but it’s a slight variation on a role her co-star, Colin Farrell, could have played in 2006, or Burt Reynolds in 1986 or Gene Hackman in 1976.