NEW YORK — For now, the Mets’ hopes of capturing the 2022 NL East title are still alive. But they’re on life support. The Mets defeated the Washington Nationals 4-2 in the first game of a doubleheader on Tuesday afternoon at Citi Field, moving to within one game of the Atlanta Braves in the division standings. The Braves lost to the Miami Marlins in Game 1 of their three-game series at loanDepot Park on Monday night and the second game of their final regular season series started at 7 p.m. on Tuesday. The defending World Series champs need only one win or one Mets loss to clinch the division a…