Paul Mescal traded the gripping action of “Gladiator II” for a searing trial of a different sort as he confronted the notorious hot wings on the well-known YouTube series “Hot Ones.” Renowned for its escalating spicy assortment of sauces, the show challenged Mescal’s palate in a contest that was a stark contrast to the historical arenas of his forthcoming film. While “Gladiator II” might feature grand battles and intense drama, it was the fiery intensity of the wings that had the actor perspiring in this instance.