Feature: Enable arrow key navigation inside Shortcut Guide

[DiogoRDuarte]

Is your feature request related to a problem? Please describe. Users cannot navigate inside the Shortcut Guide using arrow keys, only using the normal ´Tab´ and ´Shift + Tab´.

Describe your proposed solution To enable navigation using the arrow keys, similarly to the charts and data elements.

Describe alternatives you've considered Only this solution was considered.

Additional context During the usability test conducted, multiple screen reader users commented on the fact that they were expecting a similar navigation inside the guide as the other places in the interface.