Search: Fix copy-to-clipboard action to only copy selected items Search: Improve right-click context menu
FIXED: [ 328918 ] Context menu item "copy selected to clipboard" copies all result items
BUG: 328918
Differential Revision: https://phabricator.kde.org/D19104
(cherry picked from commit 764244391496e3eb2bcab2692dfb4ab5928de7d5)