Robert F. Kennedy Jr.’s running mate is making headlines Wednesday for all the wrong reasons. Nicole Shanahan, the billionaire California lawyer and philanthropist, reportedly “partied with Silicon Valley’s elite and used recreational drugs including cocaine, ketamine and psychedelic mushrooms,” according to a new report from The New York Times. The report also claims she split with her former husband, Sergey Brin, a founder of Google, after “she had a sexual encounter with Elon Musk in 2021.” According to people interviewed by the Times, it was part of a pattern. Shanahan’s first husband, tec…