[FIX] point_of_sale: multiple lot numbers
[FIX] point_of_sale: multiple lot numbers

- Product tracked by lot:
  3 units of lot A
  2 units of lot B
- On the operation type 'PoS Order', only tick 'create new SN/LN'
- Make 2 PoS orders for 2 units.
- Close the PoS session.

The first picking (2 units of lot A) is done, but the second picking is
ready but not done.

The issue comes from the world famous error:
'Cannot set the done quantity from this stock move, work directly with
the move lines.'

We apply the same logic than in commit f0028bc837bc93e355d5bda7be12231

opw-1878256

ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo