Fix flaky test tools/tests/test_local_edition.py

The merge lane saw `tools/tests/test_local_edition.py` fail and then pass on a rerun of the same tree. - Test: `tools/tests/test_local_edition.py` - Tree: `1090871331381a509dd45c2eb696f5f9b3b5fbf6` - Lane task: 10221 - Flake record: 01a177bc-6c4e-716d-818c-317bc2efb4d7 Make it deterministic; do not delete it unless it tests nothing.