Fix deserialization error

[aeisenberg]

We added a successful property to serialized local queries. But, this property does not exist on older serialized queries. This change ensures older queries get a successful property when deserialized.

Clearly, our (de-)serialization tests are not sufficient. After this change goes in, I'll add some new tests for it. I've tried this out locally and this change is working.

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.

[shati-patel]

Thanks @aeisenberg! ❤️ That was a more damaging typo fix than I'd realised 😅

[aeisenberg]

There were actually two issues here. Not just the typo.