[BUG_SP] Pocket turn course on outmost headland doesn't have a discharge target during turn

[pops64]

You will lose fruit when the chopper doesn't have a trailer to discharge to and there is no safety check when the chopper makes a sharp headland turn that uses a pocket(Outermost headland).

Due to the complexity of this turn the unload driver stay well clear of the chopper until it is done. See if there is a way to either not make this pocket and still turn or some way to keep the trailer close enough that we aren't losing this fruit