[KonsoleProfiles applet] Fix navigating with the keyboard
Summary: BUG: 399192
Test Plan:
Create several profiles in Konsole.
Open the Konsole Profiles applet, using the keyboard arrows
should now move the selected item.
Reviewers: Plasma, davidedmundson
Reviewed By: Plasma, davidedmundson
Subscribers: plasma-devel
Tags: Plasma
Differential Revision: https://phabricator.kde.org/D15877