How about a cheap workaround with:

"Previous reviewers of this article have left a comment either on the creator's or the article talk page."

A bit of background (pre-empting the questions why this option is requested):
Reviewers very often want to offer personal advice to new users which is not appropriate for the article talk page. If posting the message to the article talk page is left as optional, more reviewers would leave a message of advice or encouragement for the creator. Leaving a copy of the message on the article talk page is fine for comments of a more general nature.

The info module looks for talk page revisions which have the pagetriage change tag. If the message is not sent to the talk page, it will be entirely invisible to subsequent users of the tool.

In T313645#8367632, @Tgr wrote:

The info module looks for talk page revisions which have the pagetriage change tag. If the message is not sent to the talk page, it will be entirely invisible to subsequent users of the tool.

@Kudpung @Novem_Linguae do you have any feedback to this comment?

A copy of the message to the article talk page message should be optional. Many reviewers' messages include information or tips for the creator that are not appropriate for general publication to the article talk page.

Subsequent users of the tool need to know that a message has already been sent to the creator. From this they can deduce why the article has been seen and/or tagged but still not been passed as reviewed for indexing by search engines.