HOUSTON — It may be a new year, but the Pistons’ old habits returned and they couldn’t build off of the momentum of their third win of the season. The offensive struggles and defensive lapses occurred at the wrong time as the Pistons struggled to score right after halftime, while the Houston Rockets produced their best offensive stretch of the night. Alperen Sengun gave the Rockets a 21-point lead early in the third quarter when he knocked down a driving floater while getting fouled by Killian Hayes. On the next Rockets possession, Sengun got the ball on the wing and the Pistons double-teamed …