By Kayla Tarnowski and Trevor Hunnicutt WINDSOR, Ontario/WASHINGTON (Reuters) – Protesters opposing pandemic restrictions flouted a court order and emergency rules, continuing to occupy a vital Canada-U.S. trade corridor early on Saturday, hours after a judge granted an injunction to end the blockade that has crippled North America’s well-knitted auto industry. Prime Minister Justin Trudeau has promised President Joe Biden quick action to end the crisis, and on Friday a Canadian judge ordered an end to the four-day-long blockade of the Ambassador Bridge, North America’s busiest land border cro…