Freshly sworn in U.S. Supreme Court Justice Sonia Sotomayor was spotted (and captured in a grainy video by a FOX camera) celebrating with friends and family at Chinatown’s Irish Channel Pub on Monday night. That Sotomayor went out dancing and sang karaoke in a local bar makes us supremely happy. We have high hopes that the justice will quickly become a visible fixture in our city. But Sonia, sweetheart, the Irish Channel? The last…