NEW YORK — Seranthony Domínguez had a 0.87 ERA against the New York Mets during his career with the Philadelphia Phillies. Now the Orioles’ closer, Domínguez’s dominance over his one-time division rival suddenly ended Monday night.Baltimore fell to the Mets, 4-3, as catcher Francisco Alvarez hit a walk-off solo home run off Domínguez in the…