We already prevent users from extracting to a non-local destination, when they use a KFileWidget. The same should be done when they drag-and-drop to a non-local destination in e.g. Dolphin. Currently the extraction is performed into the current directory, which is not expected.

CCBUG: 204323

Drag-and-dropping to e.g. trash:/ now results in a warning message and no ExtractJob is started. Drag-and-dropping to local destinations still works.