FORT LAUDERDALE — At the end, as 40-year-old Atlanta United goalie Brad Guzan went skyward with a celebratory punch in the air Saturday night, the Apple TV announcers were calling this the greatest upset in Major League soccer history. That’s not just underselling Atlanta’s feat. It’s also a sweet way of saying what really happened Saturday night. Inter Miami CF didn’t need another goal in the 3-2 loss that ended its season.