All eight of Queen Elizabeth II’s grandchildren stood in silent vigil beside her coffin Saturday, capping another day in which thousands came to pay their respects to the late monarch. Members of the public wishing to pay their respects to the late monarch huddled in a line that snaked across London, enduring the city’s coldest night in months on Friday. Authorities warned that more chilly weather was expected Saturday night. “Tonight’s forecast is cold. Warm clothing is recommended,” tweeted the UK Department for Culture, which is in charge of the line. Draped in her Royal Standard and capped…