Almost every Oscar season there seems to be one young actor who charms the pants off everyone. Sometimes they win Oscars (“The Piano’s” Anna Paquin), sometimes they get nominated (“Beasts of the Southern Wild’s” Quvenzhané Wallis), sometimes they grow up to have established careers (“Billy Elliot’s” Jamie Bell, “About A Boy’s” Nicholas Hoult) and often they just have a grand ol’ time on the awards circuit (“Room’s” Jacob Tremblay, “Jojo Rabbit’s” Roman Griffin Davis).