HONG KONG, Feb 7 (Reuters) - Hong Kong residents crowded supermarkets and neighbourhood fresh food markets on Monday to stock up on vegetables, noodles and other necessities after a record number of COVID-19 infections in the city and transport disruptions at the border with mainland China. The city of 7.5 million people reported a record 614 coronavirus cases on Monday, in the biggest test yet for the Chinese territory's zero-COVID strategy. Hong Kong imports 90% of its food supplies, with the mainland its most important source, especially for fresh food. Consumers have already seen a shortage of some foreign imported...