The starry cast of Aaron Sorkin’s 1960s courtroom drama “The Trial of the Chicago 7” took the top prize Sunday at a virtual Screen Actors Guild Awards where actors of color, for the first time, swept the individual film awards.The 27th SAG Awards, presented by the Hollywood actors’ guild SAG-Aftra, were a muted affair — and not just because the red carpet-less ceremony was condensed to a pre-recorded, Zoom-heavy, one-hour broadcast on TBS and TNT.