Count cancelled runs in last-5 flaky check

[aIbrahiim]

follow up on #38579
That PR fixed cancelled runs in success rate calculation but the "last 5 runs all failed" check still only looks at failure, not cancelled so when workflow timeout, github mark it as cancelled not failure so if last 5 runs all timeout we still not flag it as flaky from that check and this change treat cancelled same as failure for last 5 runs check.

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Summary of Changes

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This pull request improves the reliability of the flaky test detection mechanism by ensuring that workflow runs resulting in a 'cancelled' status (such as timeouts) are treated as failures. This prevents workflows that consistently time out from being overlooked by the existing stability monitoring logic.

Highlights

• Flaky test detection logic: Updated the 'last 5 runs' check to include 'cancelled' statuses alongside 'failure' to better identify flaky workflows.
• Improved logging: Updated console output to reflect that cancelled runs are now considered in the failure criteria for workflow stability checks.

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[damccorm]

Thanks!