By THÉRÈSE MARGOLIS Papa Guapa, Mexico City’s multifaceted baked potato eatery, has turned a sharp left corner and headed out for a passage to India with its new Eastern-focused, vegan-friendly menu. The star of the new meat-and-dairy-free bill of fare is the Paparya Rai, a baked tater drenched in curried lentils, tapioca, peanuts, tofu and chillies. Named in honor of