Aubrey Plaza believes her “Happiest Season” co-star Kristen Stewart contracted the coronavirus while they were filming the movie earlier this year. During a recent virtual appearance on “The Late Show,” Plaza was asked by host Stephen Colbert about filming the movie in late February just before the pandemic changed everyone’s way of life in March. The actress noted that the virus was a topic of conversation on set, but it was not treated with the seriousness it deserved at first. “Right