Get parity in `inspector-issues` w/ DevTools Issues panel

see #13948

https://github.com/GoogleChrome/lighthouse/pull/13948#issuecomment-2967993492:

> Instead I'd like to reuse the code from [source.chromium.org/chromium/chromium/src/+/main:third_party/devtools-frontend/src/front_end/models/issues_manager](https://source.chromium.org/chromium/chromium/src/+/main:third_party/devtools-frontend/src/front_end/models/issues_manager/). Namely, calling getDescription() to get the exact stuff that DevTools would show. It may be feasible to get this working like we do w/ other CDT strings via build-cdt-strings.js.