Publish TRACE TRO declarations for UK data releases

[MaxGhenis]

Summary

• add a TRACE TRO builder for UK data release manifests
• upload trace.tro.jsonld alongside the floating and versioned release manifests
• add focused regression coverage for TRO generation and HF commit operations

Testing

• PYTHONPATH=/Users/maxghenis/PolicyEngine/_codex_prs/policyengine-uk-data-trace-tro-export /Users/maxghenis/PolicyEngine/policyengine-uk-data/.venv/bin/pytest /Users/maxghenis/PolicyEngine/_codex_prs/policyengine-uk-data-trace-tro-export/policyengine_uk_data/tests/test_release_manifest.py /Users/maxghenis/PolicyEngine/_codex_prs/policyengine-uk-data-trace-tro-export/policyengine_uk_data/tests/test_trace_tro.py
• /Users/maxghenis/PolicyEngine/policyengine-uk-data/.venv/bin/python -m ruff check policyengine_uk_data/utils/data_upload.py policyengine_uk_data/utils/release_manifest.py policyengine_uk_data/utils/trace_tro.py policyengine_uk_data/tests/test_release_manifest.py policyengine_uk_data/tests/test_trace_tro.py