Dylan O’Brien was dismissed as “difficult” when he raised concerns on the set of ‘The Maze Runner’. The 33-year-old actor suffered “concussion, a facial fracture and lacerations” after being hurled from a moving vehicle and hit by another car while shooting the movie in 2016, and he’s admitted the “life-changing incident” has given him the strength to “stand [his] ground” when working and not be afraid to raise any issues. He told Men’s Health magazine: “It was a life-changing incident. I’ve approached everything differently, you could say, particularly with regards to standing my ground on se…