KCM Icons : Use KIconloader::emitChange() instead of deprecated newIconLoader()
Summary:
Changing the icon size should emits KIconloader::iconLoaderSettingsChanged as well
BUG: 420577
FIXED-IN: 5.18.5
Reviewers: Plasma, bport, broulik
Reviewed By: Plasma, bport, broulik
Subscribers: broulik, plasma-devel
Tags: Plasma
Differential Revision: https://phabricator.kde.org/D29285