Since 2010’s That Hopey Changey Thing, Off-Broadway theatergoers have fretted over American politics alongside the Apple family, denizens of the Hudson Valley village of Rhinebeck. With We’ll See now at the Public Theater, playwright and director Richard Nelson presents the 13th  installment of his “Rhinebeck Panorama” and his eighth Apple play (counting three COVID live streams). Thanks to a familiar and remarkable ensemble, and Nelson’s signature fly-on-the-wall naturalism, We’ll See achieves its quiet, bittersweet power by placing larger political concerns alongside the hyper-specific and finely drawn relationships of its characters.