bug: flaky tests workflow failed (isolate)

The nightly flaky tests workflow (with isolation mode enabled) has failed. This indicates external API rate limiting, RPC reliability issues, or other intermittent failures that may affect users. Check the [flaky tests workflow page](https://github.com/foundry-rs/foundry/actions/runs/26859076056 ) for details. This issue was raised by the workflow at `.github/workflows/test-isolate.yml`.