LOS ANGELES—Unlike most of his Los Angeles Lakers teammates, Russell Westbrook grew up a Lakers fan who personally understood the yearly importance of their rivalry series with the Boston Celtics. Leading a dominant victory over the Celtics while wearing the Lakers’ gold jersey for the first time clearly made for a special night for the veteran guard. “As a player like myself, you want to make sure you approach all games the same while also understanding the significance of this particular game,” Westbrook said. “That makes it a good win for us.” LeBron James scored 30 points, Westbrook added 24 points and 11 assists, and the Lakers beat the Celtics 117-102 on Tuesday night in the latest chapter of the NBA’s most storied rivalry. Anthony Davis had 17 points and 16 rebounds for the Lakers, who produced one of their best recent performances in their fourth victory in six games …