Handle Ctrl+Left/Right not working in brief view
Since the fix for bug 374238, Ctrl key with left or right keys didn't work anymore in the brief view.
This patch change the logic between KrInterBriefView::handleKeyEvent and KrView::handleKeyEvent
FIXED: [ 411384 ] CTRL+RIGHT / CTRL+LEFT
BUG: 411384
Differential revision: https://phabricator.kde.org/D23880