Remove audit list focus ring

[yuinchien]

Provide the steps to reproduce

1. Run LH on https://www.google.com/chrome/

What is the current behavior?

The default focus ring behavior is visible, according to the recent review, I recalled the decision was to use :focus-visible(only show the ring when focus via keyboard for accessibility). The rationale is that the focus ring creates bounding box that excludes the selected content (dropdown), and can be confusing to read, it also doesn't look pretty.

What is the expected behavior?

Environment Information

• Affected Channels:
• Lighthouse version: 5.1.0
• Node.js version:
• Operating System:

Related issues

[connorjclark]

:focus-visible is not ready for use yet - only in FF behind a vendor prefix, and Chrome behind an opt in flag.

Polyfill: https://github.com/WICG/focus-visible

[brendankenny]

Focus ring is still sort of there, but has changed since this was filed (maybe most recently in #13249?). Closing as stale