NEW YORK — Mark Vientos, Pete Alonso, Brandon Nimmo and Francisco Alvarez homered off Taijuan Walker, and the New York Mets scored 10 runs in three straight games for the first time in their 63-season history with a 10-6 victory over the Philadelphia Phillies on Thursday night.Philadelphia, which leads the NL East by six games over second-place New York, failed in its second attempt to clinch after losing Wednesday at Milwaukee. The Phillies would clinch a playoff berth with one win over the Mets during the four-game series and would clinch their first division title since 2011 with two victories over the Mets this week.New York won its fourth straight game and for the 16th time in its last 20, maintaining a two-game lead over Atlanta for the NL’s final wild-card position.“We know we’re good,” manager Carlos Mendoza said. “We’re capable of having games like that.”Rookie Luisangel Acuña, a brother of Atlanta star Ronald Acuña Jr., drove in the 10th run with an RBI triple in the seventh off José Alvarado. The Mets were coming off 10-1 and 10-0 routs of Washington and are 61-33 following a 24-35 start.“It’s pretty amazing that the Mets have played over 10,000 games and we’re the first ones to do this,” Nimmo said, rounding up. “That’s pretty special.”Mets star shortstop Francisco Lindor missed his fourth straight game because of a sore back. Luis Severino (11-6) gav …