Source: Theo Wargo / Getty Beyoncé and JAŸ-Z went big for their return to the Met Gala, and that definitely included the afterparty. An onlooker tells Page Six that The Carters posted up at Crane Club’s Members Lounge to cap off fashion’s biggest night on Monday. The entrance was blocked off, of course. The paparazzi was able to peep some of the A-listers who entered the party, including Teyana Taylor, Leonardo DiCaprio, and even rock icon Mick …