Star-studded Oscar rehearsals preview the big show, minus the surprises

“Meryl Streep!” the 7-year-old shouted. “I’ve met Meryl Streep!”

Viola Davis’ daughter, Genesis, bounded down the steps of the Oscars stage and hopped into the seat where “The Post” star would sit just a day later. With roughly 24 hours left until the Dolby Theatre opened its doors to for the Academy…