The authors could be required to declare only to the reviewers that ChatGPT was used for the purpose of cleaning up the language. Reviewers could then be alert

The authors could be required to declare only to the reviewers that ChatGPT was used for the purpose of cleaning up the language. Reviewers could then be alert to check for artifacts like this, verify that no references were hallucinated, etc. Perhaps a footnote would be added to mention that ChatGPT was used in this way.