In an aerial view, a customer walks by a sign as they leave a McDonald's restaurant on April 03, 2023 in San Pablo, California.McDonald's will extend its $5 value meal beyond its initial four-week window in most of its U.S. markets, as the fast food giant says the offer is driving traffic back to restaurants.In a memo to the U.S. system obtained by CNBC on Monday, executives wrote that nearly every business unit, encompassing 93% of its restaurants, voted to extend the promotion past its original end date l ...