CLEVELAND — These aren’t the regular-season Knicks — at least not since they trailed the Hawks in the first round of the playoffs. They haven’t lost in a month, reeling off a franchise record 10 consecutive wins in the postseason, mostly in dominant fashion. Take it from someone who would know. “Teams that make that next step, it’s the balance that’s impressed me the most,” Cavaliers coach Kenny Atkinson said after practice Sunday, the eve of Game 4 of the Eastern Conference finals series that