Leave your stupid Switch 2 patches in your pocket.
Plenty of Switch 1 titles are getting upgraded for Switch 2 via updates or all-out Switch 2 editions. Some are paid some are free, but they've all been marketed as the way in which Switch 1 games will be enhanced for the new system. So what happens if you put a Switch 1 game into a Switch 2 that hasn't received any sort of Switch 2 patch?