Sean Baker’s “Anora,” a comic but devastating Brooklyn odyssey about a sex worker who marries the son of a wealthy Russian oligarch, won the Cannes Film Festival’s top award, the Palme d’Or. The win Saturday for “Anora” marked a coronation for Baker, the 53-year-old indie filmmaker of “The Florida Project " who used iPhones to make his 2015 film “Tangerine.” …