At Miracolo Northern Italian restaurant, one can savor brilliantly seasoned veal saltimbocca, or luscious risotto alla milanese, but no cannoli. Never cannoli. Maria Pia Angelotta, the spirited seventy-six-year-old owner of the Philadelphia-area eatery thats been in her family for four generations, has butted heads with her head chef over the cannoli ban more than once. And when the head chef is your own granddaughter, things can get a little heated...