When Nicholas Galitzine arrived on the set of Julia Jackman’s “ 100 Nights of Hero ,” he had to check his inhibitions at the door. “They were like, ‘Yeah, you’re going to be naked, covered in blood, dragging a stag through the castle,’” the 31-year-old English actor says, recalling the first scene he filmed for the subverted fairy tale. “I was like, ‘Of course.’” Simu Liu and Fala Chen to Co-Chair Unforgettable Awards Ceremony Besides, after a string of massive streaming hits — “Purple Hearts,”