Stranger things have happened. Even though Matthew Modine’s character on the hit Netflix series “Stranger Things” appeared to die after getting shot by a sniper in Season 4, he’s hinted that he would love to return to his role as mad scientist Dr. Martin Brenner. “My desire to return to ‘Stranger Things’ is natural, don’t you think?” Modine said. “Brenner is a fascinating character. I’d like to explore the character more deeply. I believe there’s so much more to understand,” he told the Daily News. Modine, 63, is curious to explore why Dr. Brenner was the person chosen to lead the experiments …