There’s some debate between “Saturday Night Live’s” Kyle Mooney and Dave McCary about which “Saved by the Bell” character they loved most as kids. “Was Screech our Brigsby?” McCary asks. “Nah, man. A.C.,” Mooney laughs back. A “Brigsby,” in these terms, is a reference to their upcoming film “Brigsby Bear,” in which Mooney’s character James is…