If, in the November gloom, you’re hankering for a romantic-comedy-drama—particularly one set in Manhattan, the city seemingly built to showcase the genre—director-cowriter Fay Ann Lee has fashioned a sweet, if simple, Cinderella story in Falling for Grace. This time, Cinderella is a Chinese-American Wall Street investment banker who has grown up in New York’s Chinatown with parents who don’t speak English. Prince Charming is a white-boy lawyer and only son in an upper-crusty Upper East Side family. Instead of that lost slipper, there’s a mix-up involving a dress from a Fifth Avenue boutique