Think about lovingly gazing right into a French patisserie’s window show of colorful confections: chocolatey éclairs, fluffy macarons, shiny religieuses … Cinematically talking, Anthony Fabian’s genial and disarming “Mrs. Harris Goes to Paris” is the closest you may get to that mouthwatering sweet-tooth sensation without the energy. Tailored from Paul Gallico’s 1958 novel (charmingly referred…