Allow copying account move from closed period
When copying a move from a closed period, the copied move is in the same period which is forbidden (even in draft). So I think we should do like for cancel and set the period to the current one and the date to today after a warning.
The journal-period could also be closed for the copied move but as this is used mainly as a soft closing which could be reopen, I think we can let the journal-period close error raised so user can reopen it.
This is the same behavior as cancel