Fix!: Handle cases of `anyOf(string, object)` by casting to `object`/`JSON`/`VARIANT`

[aaronsteers]

Resolves: #244

Fixes a condition where loads will fail if schema is defined as being either "string" or "object".

In these cases, we will begin to fail over to "object" type, which would then be interpreted as "JSON" or "VARIANT".