Kamala Harris made a not-so-surprise appearance on “Saturday Night Live” three days before Election Day, appearing on the other side of a false mirror from her on-air alter ego Maya Rudolph. The vice president had been rumored to appear on the show, which is celebrating its 50th anniversary on air, and showed up toward the end of the episode’s cold open when Rudolph briefly paused to take in the enormity of the moment. “Wow, this is it, the last campaign stop in Pennsylvania,” Rudolph said. “I wish I could talk to someone who’s been in my shoes. You know, a Black South Asian woman running for …