- Activate: 'Order-Specific Routes' and 'Dropshipping'
- Create a stockable product in AVCO + AUTO
- Purchase the product at $10 and validate the receipt
  => One product @ $10 in stock
- Sell the product via dropshipping
- A PO is generated, change unit price to $20, validate
- Validate the picking

The product in stock has now a cost of $15, i.e. the dropship impacted
the cost of the product.

Now if the product in stock is sold, the product will go out at a cost
of $15. This will lead to a wrong accounting valuation (0 product in
stock with -$5 in stock).

opw-1922289
opw-1935272
opw-1937672

closes odoo/odoo#31786

Signed-off-by: Nicolas Martinelli (nim) <nim@odoo.com>