Summary of Changes

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This pull request enhances the robustness of the HTTP client by implementing a retry mechanism for specific HTTP 400 Bad Request errors. Previously, only certain 403 Forbidden errors triggered retries; now, the system will also retry requests that fail with a 400 status code if the underlying reason is identified as a failedPrecondition. This change aims to improve the resilience of API calls against transient precondition failures.

Highlights

• Enhanced Retry Mechanism: The _should_retry_response function was updated to include HTTP 400 (Bad Request) status codes in its retry considerations, specifically for failedPrecondition and preconditionFailed reasons.
• Expanded Error Handling: The retry logic now explicitly checks for failedPrecondition and preconditionFailed reasons within 400 Bad Request responses, allowing for retries on these specific conditions.
• New Test Coverage: A new test case, test_retry_400_failed_precondition, was added to verify the correct retry behavior when an HTTP 400 response with a failedPrecondition reason is encountered.

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