Matt Donnelly Senior Film WriterIn Denis Villeneuve’s “Dune,” Rebecca Ferguson plays Lady Jessica, lover of the world ruler portrayed by Oscar Isaac and matriarch to Timothée Chalamet’s messiah-in-waiting. She is a doting mother who is distracted by the pressures of a royal household, but more importantly, she is brimming over with a supernatural power that could bring about revolution.That dynamic is not a bad allegory for Ferguson’s career.