“Kong neck” is what Brian Tyree Henry, Rebecca Hall and Dan Stevens call the art of maintaining one’s neck at the proper angle to gaze upon Godzilla and King Kong in the film franchise’s latest installment, “Godzilla x Kong: The New Empire.” The cast members, including Kaylee Hottle, said working with green screen was challenging at times and one day involved acting opposite “just a guy with a pole and a foam finger.” The movie opens March 29. (March 21)