David Jonsson, the fast-rising British star of “Alien: Romulus,” “Rye Lane” and “Industry,” has joined Phoebe Arnstein’s short film “If You’re Happy” as executive producer. Starring “The Crown” alumnus Erin Doherty (soon to be seen in Disney+ series “A Thousand Blows”), “If You’re Happy” follows Lotte (Doherty) as she navigates the daunting challenges and demands […]