Fix flaky test_text_query_word_weights and re-enable test #497
Description
Summary
Investigate and fix flakiness in test_text_query_word_weights, then re-enable it in CI.
Level: Beginner
Current State
- The test is currently skipped due to flaky behavior.
- This hides potential correctness regressions in text query weighting behavior.
Proposed Change
- Identify root cause of nondeterminism (ordering, floating-point sensitivity, or environment assumptions).
- Stabilize assertion strategy.
- Remove skip marker and verify reliability across repeated runs.
Definition of Done
- Test is re-enabled.
- Test passes consistently in repeated local runs and CI.
- Full unit suite remains green.
Out of Scope
- Broad refactor of text query architecture.