Add missing renamed event when a destination file already existed
Summary: This was missing when a file was being copied/moved, its destination existed, and the user chose to rename the destination file or autorename was set.
Test Plan: ctest -R kiocore-jobtest
Reviewers: Frameworks, ervin, dfaure
Reviewed By: dfaure
Differential Revision: https://phabricator.kde.org/D26878