Remove conditionals and version constraints for unsupported CLI versions

[charisk]

We dropped support for CLI versions older than 2.9.4 in #2610.

This PR removes conditionals and version constraints for unsupported CLI versions.

See individual commits for more details.

Checklist

N/A:

• 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.

[koesie10]

I believe that we can also remove the CLI_VERSION_WITH_PER_QUERY_EVAL_LOG constraint (2.9.0), but the other changes look good to me.

[charisk]

I believe that we can also remove the CLI_VERSION_WITH_PER_QUERY_EVAL_LOG constraint (2.9.0), but the other changes look good to me.

Good shout, I missed that one. Done now.

[koesie10]

LGTM