Hunter Ingram When your day job is spent plotting a rebellion in a galaxy far, far away, it helps to have something that can bring you back down to Earth — or whatever planet you call home. When he’s not the Empire’s most wanted on Disney+’s “Andor,” Diego Luna grounds himself by returning to the theater. He grew up going with his father, and it has been the constant of his career. “In a way, it has kept me sane,” says the actor after a long day on the London set of “Andor” Season 2. “Theater is a great way to go back and put your feet on the ground and remind you what this is all about.”