The Sunlit Night gomovoies,There are many reasons Jenny Slate is a distinctive performer — her voice, her balance of liveliness and calm — but one of her more practical gifts onscreen is that she nails millennial professional anxiety, acting in the registers between deference, exhaustion and indifference. In the travelogue drama “The Sunlit Night,” she plays Frances, an artist who takes on a summer apprenticeship in remote Norway.