Shahrbanoo Sadat’s “ No Good Men ,” which opens the Berlin Film Festival , mixes romance, politics and humor in ways that Afghan cinema has never done before. It’s the tale of a camerawoman at a Kabul TV station who — while struggling to retain custody of her 3-year-old son after leaving her unfaithful husband — becomes romantically entangled with the station’s star male journalist just before the 2021 fall of Kabul to the Taliban. The Afghan filmmaker’s previous two films, 2016’s ”Wolf and