fix: Resolve orb validation error

[JulesFaucherre]

Checklist

• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have checked for similar issues and haven't found anything relevant.
• This is not a security issue (which should be reported here: https://circleci.com/security/)
• I have read Contribution Guidelines.

Changes

Orb validation uses the v1 validation if the GraphQL detection request errors

Rationale

As stated in this issue on older versions of the GraphQL endpoint, the _schema is not requestable, this indicates an old version of the GraphQL endpoint, and should fallback to v1 validation

[loderunner]

As discussed offline, this is a temporary fix, we'll ultimately need to improve detection cases of API version clients.