[FIX] stock: Cancel transfer with scrap
[FIX] stock: Cancel transfer with scrap

Step to reproduce:
- Create a transfer T with quantity for the initial demand
- Scrap all the products

Bug:

At this point, it was impossible to validate or cancel the transfer.

opw:2032714

closes odoo/odoo#34950

Signed-off-by: Simon Goffin (sig) <b3ed2cf313e7546085c3c50622143ff31e467d23@openerp.com>
ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo