Related Issues

• fixes fix: HTMLToDocument generates noisy ERROR logs when receiving empty ByteStream objects #11668

Proposed Changes:

When HTMLToDocument receives a ByteStream with empty data (b""), it passes the empty content to trafilatura's extract(). Internally lxml then emits several ERROR/WARNING log lines (e.g. Document is empty, discarding data: None) that surface as noise in production logs, even though the component already skips the source gracefully.

The existing try/except around extract() cannot suppress these because lxml logs the problem internally rather than raising an exception.

This PR adds a guard that skips any ByteStream whose data is empty before extract() is called, so lxml is never invoked and no noisy logs are produced. The empty source is skipped with a single WARNING-level message, consistent with the component's other skip paths.

How did you test it?

• Added a unit test test_run_empty_bytestream that runs the converter on an empty ByteStream and asserts:
  • no documents are produced,
  • trafilatura.extract is never called (mock_extract.assert_not_called()),
  • the skip is logged.
• Ran locally:
  • hatch run test:unit test/components/converters/test_html_to_document.py — 14 passed
  • hatch run test:types — success, no issues
  • hatch run fmt — all checks passed

Notes for the reviewer

The fix is intentionally minimal and placed right after the source is read, mirroring the existing skip-on-error pattern in run(). A release note has been added under releasenotes/notes/.

Checklist

• I have read the contributors guidelines and the code of conduct.
• I have updated the related issue with new insights and changes.
• I have added unit tests and updated the docstrings.
• I've used one of the conventional commit types for my PR title: fix:.
• I have documented my code.
• I have added a release note file, following the contributors guidelines.
• I have run pre-commit hooks and fixed any issue.