[FSSDK-9127] fix: Handle ODP INVALID_IDENTIFIER_EXCEPTION code

[mnoman09]

Summary

Support a new format for ODP InvalidIdentifierException (when SDK fetches segments with a non-registered userId).

       "extensions": {
            "code": "INVALID_IDENTIFIER_EXCEPTION",
            "classification": "DataFetchingException"
       }

Test plan

• updated unit tests to cover the new response format.
• Existing unit tests should pass
• FSC should continue to pass

Issues

• FSSDK-9127

[jaeopt]

Wow, it's quite expensive to support it in java-sdk. I see a couple of more cases to be covered.

[jaeopt]

LGTM