Last month, I crowded into a wooden booth at NoLIta’s Thai Diner with the chefs Kia Damon, Andrés Tonatiuh Galindo Maria, Chintan Pandya and Missy Robbins; the pastry chef Melissa Weller; and the T writer-at-large Ligaya Mishan for a languorous weekday lunch. Between slurps of fantastic khao soi …