Just a few days ago I was doing some low paid (well, not so low) Ai classification task - akin to mechanical turk ones - for a very big company and was - involuntarily, since I guess they don't review them before showing - shown an ai image by the platform depicting a naked man and naked kid. though it was more barbie like than anything else. I didn't really enjoy the view tbh, contacted them but got no answer back
If the picture truly was of a child, the company is _required_ to report CSAM to NCMEC. It's taken very seriously. If they're not being responsive, escalate and report it yourself so you don't have legal problems.
See https://report.cybertip.org/.