Display "result format" dropdown in results view for (path-)problem queries

[shati-patel]

For variant analyses with interpreted results (i.e. problem queries or path-problem queries), users should have the option to display raw results (see internal linked issue for details).

This PR adds the new dropdown from #2743 to the MRVA results view, but only for queries that have a path-problem or problem kind. (Otherwise there's only one display format anyway)

Note: The dropdown currently has no effect 🙃 For the final piece of the puzzle, I'll open a PR that actually uses the result format to control the result display! (It's in progress, stay tuned 😎)

Checklist

N/A (I'll update the changelog in the final PR that strings things together)

• CHANGELOG.md has been updated to incorporate all user visible changes made by this pull request.
• Issues have been created for any UI or other user-facing changes made by this pull request.
• [Maintainers only] If this pull request makes user-facing changes that require documentation changes, open a corresponding docs pull request in the github/codeql repo and add the ready-for-doc-review label there.

[charisk]

Great work!