The unfortunate legacy of the Oscar-winning “Dead Man Walking” is its rendering of all other death-row stories insignificant, if not useless. But that hasn’t deterred the makers of “Trial by Fire,” although it could be argued that it should have. Imitation is indeed flattery, but not when imitation is this pale.While watching an overly earnest Laura Dern frantically trying to halt the execution of a wrongly convicted arsonist, I was further reminded [...]