We shouldn't add PendingCutRole (which i.e. greys out items from the EntityTreeView) when we are only copying, not cutting

Although I've found no PIM applications which use Copy action (KMail, KAdressBook and KOrganizer use Copy To with a submenu),
I've used this action in KJots (to be able to paste links to various notes / books inside notes, instead of existing copy_link_address action), and it works.