Intermittent error in /domparsing/DOMParser-parseFromString-url-base.html

```
  ▶ ERROR [expected OK] /domparsing/DOMParser-parseFromString-url-base.html
  │   → window.resolveLoadPromise is not a function
  │ 
  └ load@http://web-platform.test:8000/domparsing/DOMParser-parseFromString-url-base.html:2:8
```