Intermittent OK in `/fetch/fetch-later/quota/same-origin-iframe/small-payload.tentative.https.window.html`, `/fetch/fetch-later/quota/same-origin-iframe/oversized-payload.tentative.https.window.html`, `/fetch/fetch-later/quota/same-origin-iframe/max-payload.tentative.https.window.html`

[Loirooriol]

https://github.com/servo/servo/actions/runs/13022788742/job/36326782877

  ▶ OK [expected ERROR] /fetch/fetch-later/quota/same-origin-iframe/small-payload.tentative.https.window.html