Use the right value of EnableMagicMimeActions
Summary: BUG: 409801
Test Plan: The bug is fixed.
Reviewers: Plasma, ngraham, apol
Reviewed By: ngraham
Subscribers: davidedmundson, ngraham, plasma-devel, Plasma
Tags: Plasma
Differential Revision: https://phabricator.kde.org/D25310