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20b72a04 - standard-tests: Add BaseModel variations tests to with_structured_output (#24527)

standard-tests: Add BaseModel variations tests to with_structured_output (#24527) After this standard tests will test with the following combinations: 1. pydantic.BaseModel 2. pydantic.v1.BaseModel If ran within a matrix, it'll covert both pydantic.BaseModel originating from pydantic 1 and the one defined in pydantic 2.