NEW YORK — Pawel Pawlikowski tried to make his film a flop. He shot it in black-and-white, in Polish and without any well-known actors. Commercial prospects were about as grim as the movie’s own exhumation of German-occupied Poland. “We did everything to make it inaccessible,” Pawlikowski said. “Not for any stupid reasons, but, like, ‘Let’s make a really uncompromising film: a Polish-speaking film in black-and-white with nothing to lose.’” And yet “Ida …