How to "groupBy" PRs that don't have the labels at the end?

I don't want to specify every label, and some PRs don't need to have labels but should still be included in the release.

There doesn't seem to be a way to do that currently.

No file or test is named in the issue. Start by locating the release-note grouping and groupBy configuration entry points, then trace how unlabeled pull requests are currently handled. Done means a user can omit an exhaustive label list while still including pull requests without labels, with documented behavior and coverage for both labeled and unlabeled cases.

索引モデルが issue の本文から書いたものです。