Fixes incorrect ID generation for identical chunks in RecursiveDocumentSplitter

[gulbaki]

trafficstars

Related Issues

• fixes #9508

Proposed Changes:

The issue occurred because Document.id is generated based on the content and meta at creation time.

However, meta fields like split_id and parent_id were added after the Document was instantiated, causing chunks with identical content and meta to produce identical ids.

• Includes a unit test that verifies uniqueness of IDs and correct metadata assignment

How did you test it?

• Added a unit test: test_recursive_splitter_generates_unique_ids_and_correct_meta

Notes for the reviewer

Checklist

• [x] I have read the contributors guidelines and the code of conduct
• I have updated the related issue with new insights and changes
• I added unit tests and updated the docstrings
• [x] 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 documented my code
• [x] I ran pre-commit hooks and fixed any issue

[CLAassistant]

All committers have signed the CLA.

[coveralls]

Pull Request Test Coverage Report for Build 15689509354

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.001%) to 90.144%

---

Totals
Change from base Build 15683643191:	0.001%
Covered Lines:	11543
Relevant Lines:	12805

---

💛 - Coveralls