Splitting the problem of C&P reuses on sub-refs. When C&Ping a sub-ref it's currently shown as a "real" reuse.
When the user edits a sub-ref that shares the same listKey as another one, we need to split the two so that they dont share the same content anymore.
Acceptance criteria
- When there are two sub-ref nodes sharing the same listKey and the user edits on of the two, we need to create a new internalItem, and remap the new node.
Post Review care
- Don't show reuse warning in edit panel when editing details.
