Christoph Roick authored May 27, 2021 and Christoph Cullmann committed May 29, 2021

Do not let shortcuts issued within a preview widget
propagate to the application's shortcut event handler.
Instead handle the event while it's still a ShortcutOverride
event to prevent the detection of seemingly ambiguous
shortcuts.
Also do not let actions defined inside the preview KPart
capture shortcuts that are handled on the application level.

BUG: 386265
BUG: 407869