The comedian Nate Bargatze is an indisputably titanic name in his field. He’s been the top-grossing stand-up in America for two years in a row, he hosted last year’s Emmys (albeit to mixed reviews), and he’s even planning on opening a theme park called Nateland in his hometown of Nashville. Consequently, there was every reason to think that his new movie, The Breadwinner , would break through with audiences; it’s a breezy comedy aimed squarely at families, ostensibly filling an underserved part