I haven't seen anything about this... When folks who have antibodies or are previously infected/exposed get the virus a second time around- assuming there is at least short term immunity- you would assume they don't come down with disease or symptoms- but are they still carriers/shedders ?
My thought is that since their body fights off the virus there is not enough replication to be a high likelihood of being a high risk carrier/shedder? Am I wrong?

Guessing it'll be just like the flu. Herd immunity until it mutates the next year.

I would think that you're right, and I haven't seen any data to suggest otherwise. There have been a few case reports of people getting reinfected, but either they have a really crappy immune system, or they were infected with a different viral illness but continued to shed COVID RNA that was picked up on swabs.