ARLINGTON, Texas — Sabrina Ionescu scored 20 points, Betnijah Laney-Hamilton had 17 and the New York Liberty never trailed on the way to their fifth straight win, a 99-67 romp over the Dallas Wings on Thursday night. Ionescu made 8 of 18 shots with four 3-pointers, and added six assists for New York, which has the league’s best record and …