What “The Last Jedi” advises is a radical break from resistance as we know it: abandoning old tactics and loyalties and handing the keys — or at least more of them — over to the grassroots: the mechanics, the child laborers, the Ewoks, and the rebel foot-soldiers. The resistance of the “Star Wars” films has never been particularly visionary, operating as a kind of top-down, underground rebellion looking to reconstitute the New Republic of the prequels.