“Jurassic Park: Fallen Kingdom,” the fifth movie in the “Jurassic” franchise to date, is an utterly unnecessary sequel that has little-to-no reason to exist.  While it’s not nearly as  bald-faced or useless as, say, “Independence Day: Resurgence,” it only becomes truly interesting right at the finish line. Director Juan Antonio Bayona (“The Orphanage”) does a decent enough…