This weekend, the box office felt the lack of what was supposed to be on the calendar. Moviegoers weren't lacking for options: The video game adaptation “Five Nights at Freddy’s” repeated in first place, “Taylor Swift: The Eras Tour” is still going strong, Sofia Coppola’s “Priscilla ” expanded nationwide, “Oppenheimer” returned to IMAX screens and several well-received indies opened as well. But this was the weekend that Warner Bros. and Legendary’s “ Dune: Part Two” was supposed to open, before the SAG-AFTRA strike had many studios shuffling release dates in anticipation of a lengthy dispute as opposed to opening films without the help of movie stars.