Fix the layout direction of 3 widgets
Fix the layout direction of some settings widgets.
Forcing LeftToRight made the page left to right in right to left layouts.
Forcing RightToLeft made the checkbox's box to the right of the text instead of being to the left (in LTR
Test Plan: Logic.
Reviewers: Krita, rempt
Reviewed By: Krita, rempt
Subscribers: rempt, ngraham
Differential Revision: https://phabricator.kde.org/D15329