Intermittent TIMEOUT in /visual-viewport/resize-event-order.html

```
Stable unexpected results (1): 
  ▶ TIMEOUT [expected OK] /visual-viewport/resize-event-order.html
  │   ▶ TIMEOUT [expected FAIL] Popup: DOMWindow resize fired before VisualViewport.
  │   │   → Test timed out
  └   └ NOTRUN [expected FAIL] iframe: DOMWindow resize fired before VisualViewport.

```
https://github.com/servo/servo/actions/runs/21091665891/job/60663967853