After 18 long months away, James Corden’s “Late Late Show” revives its ridiculous “Crosswalk: The Musical,” bringing actual musical numbers from Amazon’s “Cinderella” (dropping September 3) with full production values and stars Camila Cabello, Idina Menzel and a “p—– off” Billy Porter to unsuspecting motorists — only in LA!After 18 long months away, James Corden’s “Late Late Show” revives its ridiculous “Crosswalk: The Musical,” bringing actual musical numbers from Amazon’s “Cinderella” (dropping September 3) with full production values and stars Camila Cabello, Idina Menzel and a “p—– off” Billy Porter to unsuspecting motorists — only in LA!