By Jessica Yarmosky On the eve of track and field’s historic party in Eugene, Ore., one of its most-loved stars shared that he was trafficked as a child. In the first world championships held in the U.S, there have been numerous memorable highlights, but one story has loomed over the grandeur of the events. On the eve of the championships, Sir Mo Farah, the beloved British runner, revealed that he was trafficked to the United Kingdom as a small child in a BBC documentary. The kicker? His name wasn’t actually Mo Farah at all. When Englishman Jake Wightman beat out Tokyo gold-medalist Jakob Inge…