LOS ANGELES—Short-handed and on the verge of a crushing fourth-quarter collapse, the Brooklyn Nets went right at Lakers star LeBron James. “Until this is over, until we can get our full roster, I think the motto is, ‘find ways to win,’ and we’ve been doing that,” Nets guard James Harden said. This time, that meant right over James’ head. Nic Claxton threw down a tiebreaking alley-oop over James with 40.7 seconds left, and Harden and the Nets returned from a week-long COVID-19 hiatus to beat Los Angeles 122-115 Saturday night. Harden had 36 points, 10 rebounds and 10 assists. The last helper was a lob that Claxton caught with two hands while soaring over James, who had just helped Los Angeles erase a 20-point deficit. Claxton posterized the 17-time All-Star, then made a free throw for a three-point play and a 118-115 lead. It had been more than two weeks …