CONCORD, N.C.—Kyle Larson continued his dominance at the Coca-Cola 600 on Sunday night, sweeping the first three stages of NASCAR’s longest race. Larson has won a series-high nine stages this year. The 28-year-old Larson led 234 of 300 laps in the 400-lap race at Charlotte Motor Speedway. Hendrick Motorsports drivers held four of the top…