Rebecca Rubin Film and Media ReporterFor the first time in two years, Tribeca Festival is going back indoors.After canceling the 2020 edition and staying mostly outside in 2021, the annual gathering is returning to traditional premieres, panels and parties to celebrate its 21st edition. It’s also staying put in Manhattan, a change from last year’s version that spanned all five boroughs of New York City.“We’re back to normal,” says Jane Rosenthal, who founded Tribeca Festival with Robert De Niro in 2002. “We are watching things together as a community.