Stuffed with Hollywood’s latest technology, Peter Jackson’s “The Lord of the Rings” prelude is some eye candy that truly dazzles and some that utterly distracts, at least in its test-run of 48 frames a second, double the projection rate that has been standard since silent-film days. It’s also overstuffed with prologues, flashbacks and long, boring councils among dwarves, wizards and elves as …