Intermittent PASS in `/webdriver/tests/classic/take_element_screenshot/scroll_into_view.py`

https://github.com/servo/servo/runs/50352086106

```
OK /webdriver/tests/classic/take_element_screenshot/scroll_into_view.py
    PASS [expected FAIL] subtest: test_scroll_into_view
```

This is the only test in the file.