Austin Butler battled brutally hot conditions in his first week on the set of ‘Dune: Part Two’. The 32-year-old star joins the epic sci-fi franchise in the new movie as the sadistic Feyd-Rautha Harkonnen and revealed how heat stroke took its toll on the cast and crew during his opening week of shooting. Austin told Entertainment Weekly: “It was 110 degrees and so hot. I had the bald cap on, and it was between two soundstages that were just gray boxes of 200-foot walls and sand. It became like a microwave. There were people passing out from heat stroke. And that was just my first week.” However…