Julia Fox was one of several breakouts to emerge from 2019’s finest and most stressful film, “Uncut Gems,” and while many critics dismissively referred to her character exclusively as Adam Sandler’s mistress, the unconventional genius of Fox’s performance in that underworld caper was that her troublemaking club girl was ultimately revealed to be every bit as conniving as the Sandman’s rapacious jeweler hero. Fox, deservedly, became a star based on Josh and Benny Safdie’s Diamond District masterwork, and the question of where her career would go from there remains a tantalizing one (Fox is one of many set to appear in Steven Soderbergh’s upcoming “No Sudden Move”).