[xunyoyo]

Summary

• add the project Apache 2.0 license header to the tensor-parallel utilities test module
• tighten the conversion_utils split/merge stub signature and adjust the related test call
• remove the unnecessary coverage pragma from the main guard

Testing

• pytest -c tests/cov_pytest.ini tests/model_executor/test_tp_utils.py
• python -m coverage run -m pytest -c tests/cov_pytest.ini tests/model_executor/test_tp_utils.py
• python -m coverage report -m --include='fastdeploy/model_executor/models/tp_utils.py'
• pre-commit run --files tests/model_executor/test_tp_utils.py

---

Codex Task