In dataflow API wrappers, generic `except Exception` handlers were swallowing
timeout exceptions (like `requests.exceptions.Timeout` and `ThirdPartyTimeoutError`),
preventing upstream retry logic and proper error handling from functioning correctly.
This patch:
- Adds explicit catching of `requests.exceptions.Timeout` to raise as `ThirdPartyTimeoutError` in `yfinance` wrapper modules (`y_finance.py`, `yfinance_news.py`, `yfinance_scanner.py`).
- Adds explicit catching and re-raising of `ThirdPartyTimeoutError` before generic exception handlers across the dataflows.
- Retains existing exception inheritance logic to avoid backward compatibility breaks.
- Updates `TestEnsureIndexesInInit` to use the explicit `ensure_indexes()` call per lazy loading changes.
Co-authored-by: google-labs-jules[bot] <161369871+google-labs-jules[bot]@users.noreply.github.com>
Co-authored-by: aguzererler <6199053+aguzererler@users.noreply.github.com>
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