chore: Fix flaky testListTablesWithPartitioning test

[lqiu96]

Fixes: #4067

[gemini-code-assist]

Summary of Changes

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This pull request resolves a known flakiness issue in an integration test designed to verify the listing of BigQuery tables with time partitioning. The modifications enhance the test's reliability by ensuring it accurately locates and validates the specific table created during the test execution, thereby preventing intermittent failures.

Highlights

• Flaky Test Fix: Addresses the flakiness in the testListTablesWithPartitioning integration test by refining its logic.
• Test Logic Refinement: Improves the test's robustness by explicitly identifying the created partitioned table and validating its properties, including adding assertNotNull checks for TimePartitioning and ExpirationMs.
• Constant Removal: Replaces a static EXPIRATION_MS constant with local variables within the test method for better isolation and clarity.

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[gemini-code-assist]

Code Review

This pull request addresses a flaky test, testListTablesWithPartitioning, by making the test logic more robust. The changes involve identifying the test-created table more specifically by its name, which prevents interference from other concurrent tests. Additionally, the test now includes more explicit assertions to prevent NullPointerExceptions and fails faster on unexpected states. The use of a local variable for expiration time instead of a shared constant also improves test isolation. I've found a minor typo in a variable name and suggested a fix.