I imagine that when you imagine a TV critic, you picture some hard-boiled, crusty, even heartless type. But I have always been a sensitive, delicate, please-leave-the-light-on sort of fellow. So Halloween is a holiday I greet with mixed emotions. I am fine with its brighter expressions – candy, pumpkins, cute costumes on little children, “It’s Halloween” by the Shaggs, all that. But you can keep your haunted houses, the latest “It,” your “Scream” masks, your trouble-making teens using the cover of the holiday to terrorize a neighbourhood. Even “The Simpsons Treehouse of Horror” I can find genu…