Follow-up to #2745. Display variant analysis results as rendered alerts or a raw table, depending on the user's selection in the dropdown:

For queries that have alerts available (path-problem or problem queries), we display as alerts by default, with the option to swap to raw results. For other queries, we can only show a raw results table, so we don't show the dropdown at all.

Checklist

• 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.
  • Docs: Update screenshots of variant analysis results view codeql#14051