Summary of test cases
Core parameter pass-through functionality is fully tested and validated
through unit tests and client integration tests.
test_asr_params.py - ParamValidator logic, mappings, transformations.
test_client.py - Client-level validation, all modes, parameter flow
test_asr_parameter_passthrough.py - OpenAI & Google.
Deepgram mock test will need more work due to dynamic imports used
in the SDK, hence not included in this commit.
Rohit P