[FIX] stock: picking of move line
[FIX] stock: picking of move line

- Activate Lots and S/N
- Track a product A by unique S/N
- Receive one unit of A
- Sell the unit of A through the POS
- Go to Inventory > Products > Lots/Serial Numbers, and open the
  Upstream Traceability report

The line corresponding to the outgoing move line is not linked to the
corresponding picking.

The field `picking_id` is empty on the `stock.move.line`, so the link is
not directly retrieved.

Even if the POS should set the `picking_id` field, the traceability
report should fallback on the picking of the move.

opw-1939413

closes odoo/odoo#31879

Signed-off-by: Nicolas Martinelli (nim) <771435c469f83f6aa9c405ac5e1ed06314a94f2d@odoo.com>
ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo