NEW YORK — And then there were seven. After injuries to key players and a trade deadline move that sent four players to the Detroit Pistons for two players ineligible to suit up on Thursday, the Knicks entered their matchup against the Dallas Mavericks with just eight players available to compete ahead of tipoff. Isaiah Hartenstein became the latest Knick to leave the court with an injury in their 122-108 loss. The Knicks already had a lengthy injured list entering Thursday’s matchup against the Mavericks: Julius Randle (dislocated shoulder), OG Anunoby (right elbow surgery) and Mitchell Robin…
