Intermittent TIMEOUT in `/css/cssom/HTMLLinkElement-load-event-002.html`

https://github.com/servo/servo/actions/runs/21395045641

```
Stable unexpected results (1): 
  ▶ TIMEOUT [expected OK] /css/cssom/HTMLLinkElement-load-event-002.html
  │   ▶ TIMEOUT [expected PASS] Load event doesn't fire for removed sheet
  └   └   → Test timed out
```