Feature: #97347 - Allow keyboard navigation in live search

See forge#97347

Description

It is now possible to select results in the live search using the arrow keys up/down and enter/tab to open the selected result. On top, the input field stays focused after a record is selected, allowing a user to quickly search and open any record from the result list without using the mouse.

Previously, it was not possible to use the keyboard to navigate through the search results of the live search.