Flaky test: TestSingle/retry_on_lease_revoked_before_election in pkg/owner

Automated flaky test report.

Title: Flaky test: TestSingle/retry_on_lease_revoked_before_election in pkg/owner
- Repo: pingcap/tidb
- Package: pkg/owner
- Case: TestSingle/retry_on_lease_revoked_before_election
- Branch: master
- Flaky Count: 1
- Time Thresholded Count: 0
- Latest Build: https://prow.tidb.net/jenkins/job/pingcap/job/tidb/job/pull_unit_test_next_gen/6014/

Window: 2026-07-03T00:00:00.000Z → 2026-07-04T00:00:00.000Z
Threshold: 100000 ms

Note: This issue is created for a specific branch; updates may be posted as comments.

Start in the pkg/owner package with TestSingle/retry_on_lease_revoked_before_election and run the named test, using the latest Prow build as context. Trace the retry and lease-revocation behavior around the election, then verify the test remains stable across repeated runs and passes in the relevant unit-test job.

Written by the indexing model from the issue text.