Reject negative ignore_rows and ignore_columns in CSVDocumentCleaner

[Premvkmishra]

Related Issues

• fixes CSVDocumentCleaner silently discards data for negative ignore counts #13074

Proposed Changes:

In CSVDocumentCleaner.__init__, negative values for ignore_rows or ignore_columns were stored unvalidated. In _clean_df, pandas iloc[ignore_rows:, ignore_columns:] treated negative integers as offsets from the end of the DataFrame, leading to silent data loss without restoring ignored sections.

• Added validation in CSVDocumentCleaner.__init__ to raise a ValueError if ignore_rows < 0 or ignore_columns < 0, matching the style of CSVDocumentSplitter and DocumentSplitter.
• Updated :raises ValueError: entry in the component __init__ docstring and updated parameter descriptions in docs-website/docs/pipeline-components/preprocessors/csvdocumentcleaner.mdx.
• Created a reno release note with fixes and upgrade sections.

How did you test it?

• Added unit tests (test_negative_ignore_rows_raises, test_negative_ignore_columns_raises, and test_negative_ignore_values_raise_from_dict) in test/components/preprocessors/test_csv_document_cleaner.py.
• Ran unit tests via hatch run test:unit test/components/preprocessors/test_csv_document_cleaner.py (24 passed).
• Executed a mutation check to confirm the new tests fail when validation is omitted and pass when restored.
• Verified hatch run test:types (mypy) and hatch run fmt (ruff).

Notes for the reviewer

• Validation is performed strictly in __init__ before attribute assignment.
• Zero (0) and positive values behave unchanged.

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:, feat:, build:, chore:, ci:, docs:, style:, refactor:, perf:, test: and added ! in case the PR includes breaking changes.
• 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.

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