By Andrew McCarty When the NBA Finals officially kicks off on Thursday night, there will be a few significant absences. Thankfully, the Golden State Warriors and Boston Celtics are mostly at full strength. The broadcasting teams, though, seem to be suffering ahead of Game 1 of the Finals. ABC’s A-list NBA team of Mike Breen, Jeff Van Gundy and Mark Jackson will be missing two key components. Breen came down with COVID during the Eastern Conference Finals and was forced to miss Game 7. Now he and Van Gundy will be missing Game 1 of the Finals. In their absence, Mark Jones will be pairing with M…