Several years ago, when Hulu debuted the first season of “The Handmaid’s Tale,” the streaming platform was best known for showing re-runs of sitcoms and network TV shows. It wasn’t a dominant force in streaming, at all. But then “The Handmaid’s Tale” debuted and instantly made Hulu an award-winning player in the Streaming Wars. Now, entering its fourth season, ‘Handmaid’s’ continues to grow in scale, as Hulu continues to become a much bigger force.