“He makes zombie movies, and he makes superhero movies. And sometimes he makes bothin the same movie!” So says the 12-year-old Marvel Cinematic Universe fan who lives in our house, describing director Sam Raimi’s “Doctor Strange in the Multiverse of Madness” after a recent preview screening. Reader, he is on the nose with that assessment. The film is equal parts “Doctor Strange” sequel; harsh “WandaVision” do-over; and, for a climax, a festival of undead digital demons who wouldn’t be out of place in Raimi’s “Evil Dead” pictures or his delightfully zingy “Drag Me to Hell.” This latest MCU bid …