LOS ANGELES — Former reality TV star Spencer Pratt isn’t a superhero. But a slew of recent viral AI-generated videos portray him as Los Angeles’ lone savior — helping thrust his mayoral campaign against Mayor Karen Bass and City Council member Nithya Raman into the spotlight in recent weeks. Many of the videos, created by filmmaker Charlie Curran, cast Pratt in cinematic, hero-style scenarios: battling Bass in a lightsaber duel while California Gov. Gavin Newsom and former Vice President Kamala