Beset by legislative scrutiny and negative press, this spring was not kind to Facebook Inc. Even so, hedge funds were pouring money into the beleaguered social media giant, even as its stock was falling. So far, it’s been a very lucrative trade. According to data compiled by Goldman Sachs Group Inc. at the end of the first quarter, 97 hedge funds counted Facebook as one of their top 10 holdings at the end of the first quarter.