Well, AI code should be reviewed prior merge into master, same as any code merged into master.
We have git for a reason.
So I would definitely say this was a human fault, either reviewer’s or the human’s who decided that no (or AI driven) review process is needed.
If I would manage devOps, I would demand that AI code has to be signed off by a human on commit taking responsibility with the intention that they review changes made by AI prior pushing