Allow to run missing ref hint in batch mode, but mark it as not having a fix.

[jlahoda]

The MissingRefOutput hint is marked as NO_BATCH, but it might make sense to run it in a batch mode, it just cannot be used to generate fixes in a non-interactive environment. So, marking it as query instead.

---

^Add meaningful description above

By opening a pull request you confirm that, unless explicitly stated otherwise, the changes -

• are all your own work, and you have the right to contribute them.
• are contributed solely under the terms and conditions of the Apache License 2.0 (see section 5 of the license for more information).

Please make sure (eg. git log) that all commits have a valid name and email address for you in the Author field.

If you're a first time contributor, see the Contributing guidelines for more information.

If you're a committer, please label the PR before pressing "Create pull request" so that the right test jobs can run.

[mbien]

makes sense and is also trivial. merging soon to get some PRs in.