Pork is probably even less popular than beef among Indians. At least a lot of the Muslims eat beef, but they don't eat pork. A majority of the Hindus, Buddhists, and Sikhs eat neither.
For real, any corporation employing a significant proportion of Indian people (hell, even non-Indian people too) should be culturally sensitive enough to know that any offer of a morale dinner must feature vegetarian options. This is basic cultural sensitivity and anyone who doesn't understand this has no business managing people.