The eBay headquarters in San Jose, Calif., Jan. 28, 2024. Seven years after eBay security personnel harassed a pair of Massachusetts journalists in an effort to get them to shut up, the Silicon Valley company and three former executives agreed to pay $56 million to settle their claims. (Ian C. Bates/The New York Times) By DAVID STREITFELD Seven years after eBay security personnel harassed a pair of Massachusetts journalists in an effort to get them to shut up, the Silicon Valley company and…