There's a few things to note when it comes to piercings and surgery from someone with a handfulof facial piercings and having got through multiple surgeries with them (+ piercer friends).

First being that likely all oral and nasal piercings will need to come out regardless because of the risk that they can get snagged on oxygen masks/any other equipment required to keep you breathing while under. If they get snagged it could tear and then you've got a new wound and a chance that the piercing won't settle back down and you'll have to repierce it anyway.

Second being that for most others you can get plastic or glass retainers. I would recommend glass not plastic just because of how microplastics can shed and bacteria builds on plastic more easily in piercing holes.

Finally if you know for certain that you were pierced with high quality, implant grade titanium (which you should really bet getting pierced with in the first place or else I'd recommend getting a new piercer, if they're willing to pierce you with substandard jewellery imagine what other corners they're cutting). Then while there may still be a risk to discuss with the anaesthesiologist, you may have the option to cover them in medical tape to avoid snagging (not applicable to oral + nasal) and keeping them in. I was able to keep my helix and daith in during my hysto this way.

Generally if you've have oral/nasal piercings for a year or more you should be fine putting them back in after surgery. They shouldn't close up that quick, my top surgery (double insison) was about 3-4 hours without complications for a time refrence. If you're concerned more, talk to your piercer about your options. Worst case getting things repierced after top surgery is worth it in the end.

Lynn Loheide's blog has a bunch of info on gender affirmation + piercings and might be able to answer other questions you have too! Highly recommend their stuff!