Haliburton is transforming his mindset to become a better scorer. Tyrese Haliburton is one of the faces of the Indiana Pacers rebuild. He’s an offensive force already at just age 22, and his passing ability ranks near the top of the league — he finished fourth in the entire NBA in assists last season. While Haliburton’s ability to read the game is already advanced for his age, in the past he has been billed as a past-first point guard. The third-year pro is a perfectionist, though, and he would often be critical of his passiveness after games in prior seasons.…