Extension display of shadow DOM selectors is confusing

### Product

axe-core

### Question

I use this tool for accessibility scanning and noticed that it doesn’t accurately indicate selectors for shadow root, which makes me doubt whether they are being properly checked. Is there any configuration I should be aware of? I would really appreciate your help.

Reproduce the reported shadow-root selector display in the axe-core extension and inspect how selectors are presented during accessibility scanning. Confirm whether shadow-root content is checked and determine the expected selector output or configuration behavior. The issue names no file or test, so locating the relevant code and verification path is part of the work.

Written by the indexing model from the issue text.