I don't understand this, the buck stops with the PR submitter. If they get repeated feedback about their PRs that are just passed-through AI slop, then the team lead or whatever should give them a stern talking to.
One of the most bizarre experiences I have had over this past year was dealing with a developer who would screen share a ChatGPT session where they were trying to generate a test payload with a given schema, getting something that didn't pass schema validation, and then immediately telling me that there must be a bug in the validator (from Apache foundation). I was truly out of words.