Some of the biggest sticklers in the return-to-office movement have been big banks and investment firms, including Goldman Sachs and JPMorgan Chase, which have, in large measure, required employees to work from the office five days a week. But not this summer. Bucking the trend, those companies are now allowing workers to stay home for one surprising reason—the World Cup. Here’s why. Goldman Sachs and JPMorgan Chase reportedly told employees the…