Add support for same input and storage for customer return shipment
Encounter popup user error "Source and Destination Location must be different" when clicking "receive" button on customer shipment return.
Steps to reproduce:
1. Demo Database
2. Edit Warehouse, Set Input and Output Location to Storage
3. Create Sale
4. Create a Sale Line with -1 Quantity
5. Quote, Confirm and Process the Sale
6. Go to the customer shipment return
7. Receive the shipment
Will Encounter above error