Search engine icons do not highlight with arrow keys

[cleveHEX]

Describe the bug

When I type a query to address bar and want to use other search engine, I use arrows to navigate in the list. Text fields work fine, but the small icons a the bottom are not highlighted, as they would with mouse.

To Reproduce

1. Type something to search bar
2. Navigate up or down with arrow keys to the small icons

Expected behavior

Search engines get highlighted Screenshots

Setup information

• OS: Fedora
• Installation method: Flatpak
• Firefox version: 118
• Theme version: master
• Optional features enabled:

Additional context

[renankogan]

407 could fix this, but it has conflicts (since it does more than just fixing this bug)

I manually modified my files here (only the modifications necessary to fix this bug), and it seems to fix