Fix invalid credentials tests to handle connection failures#4

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Copilot wants to merge 3 commits intomasterfrom

copilot/fix-failed-unit-tests

Commits on Jan 31, 2026

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Copilot
committed
Fix test assertions to handle both connection failure and authentication failure

Copilot
and
kerryjiang
committed
Revert test changes - the issue is a bug in MySQLConnection, not the tests

Copilot
and
kerryjiang
committed