As you probably know by now, the 2013 film “Room 237” is about “The Shining.” But it’s also about obsession, about people who have fallen into a rabbit hole in their minds and can’t get back out again. To them, Stanley Kubrick made more than just a horror film. Sounds interesting, right? As a big fan of “The Shining,” I was really looking forward to this analytical discussion, but unfortunately I found it a bit disappointing and tedious.