I was in the same position as you and ended up disclosing my IAs (2). I made that decision based on my principles as an individual and my family values, sort of a "will I still do the right thing even if no one else is watching?" moment.
Did it harm me in some ways? I'm sure it did. I often thought to myself that there was no way I would get any interviews when there are so many other candidates without any violations. But I also looked at it this way: I had room to explain more about myself and talk about my growth in a way that other people didn't.
Ultimately many schools rejected me (who doesn't get rejected by plenty of schools in this day and age though?) but some saw through those incidents to the sort of person that I am. I was interviewed by a few schools and have been blessed enough to receive an acceptance at a US MD school which is an almost indescribable feeling because this is a moment that I have only been able to dream about until now.
Of course, the choice is yours to make and schools may or may not ever find out about this incident. But remember that you are taking a gamble (with a lot at stake) and that the process of true learning and growth from ones mistakes cannot take place without owning up to your faults.
I wish you the best of luck!
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