Query fields were moved to _query-suffixed tables in the 2026.2 version of SF. As a result model-info is no longer (correctly) usable on any query field.

This is inconvenient when you want to develop dynamic functionality or query metadata at a higher level. I happen to be aware of this change from the latest SF release because I was involved with upgrading to the 2026.2, but a developer who was not involved in the upgrade would have a very difficult time figuring out where the query columns are actually stored. It would require a significant amount of investigation and trial-and-error to uncover the correct locations.
My suggestion would be to add the _query-suffixed tables as a detail in the form of their parents to alleviate this issue.
