BUG: 361984
This patch disallows dropping task manager items outside of the plasmoid when widgets are locked.
As a user whose primary device is a laptop (with a touch screen at that) I find myself involuntarily dragging task manager icons to other applications, such as a maximized browser window or a code editor. This leads to .desktop files being dropped in various applications, which I can assume is not something one wants to do very often(if at all?).
This patch disables this functionality when widgets are locked. When they are unlocked the behaviour stays the same(so icons can be dragged into the desktop and so on).
This affects "Task Manager" and "Icons-Only Task manager" plasmoids.