K2 in test_logging_only_scope_chaos.py flaked on CircleCI with
AttributeError: type object 'BaseModel' has no attribute '__pydantic_core_schema__'
raised inside the OpenAI client while its 30-thread control burst parsed responses
The SDKs define their response models with deferred schemas, so the first parse of each
model rebuilds it, and pydantic's model_rebuild is not safe when several threads hit it
at once. Every integration worker now builds those schemas in pytest_configure, before
any test can start a thread pool
Co-authored-by: yucheng-berri <293926326+yucheng-berri@users.noreply.github.com>
