BOSTON—Jayson Tatum scored 38 points and led a third-quarter surge that sent the Boston Celtics past the Atlanta Hawks 105–95 Sunday for their eighth straight win. Tatum also had 10 rebounds. Robert Williams added 10 points and 14 boards, Jaylen Brown scored 17 points, and Marcus Smart had 13. “We’re just cooking right now,” said Tatum, who had 16 points in the third as the Celtics outscored the Hawks 42–23 in the period. Trae Young had 30 points and 10 assists to lead Atlanta, keeping the Hawks within range until the final few minutes of the fourth quarter. Bogdan Bogdanovic finished with 26 points and Clint Capela pulled down 17 rebounds for the Hawks, who lost for the fourth time in five games. Atlanta held a 10-point lead at halftime but unraveled quickly in the third quarter. “I thought in the third quarter, we got distracted by the officiating. They …