[FIX] purchase_mrp: receive kits with multiple UOM
[FIX] purchase_mrp: receive kits with multiple UOM

- Create 3 products A, B & C
  A is in Units
  B is in kg
  C is in m
- Create a BOM kit for A using 1 kg of B and 1 m of C
- Create a PO for A, validate
- Receive the picking

An error is raised: "Conversion from Product UoM ... to Default UoM ...
is not possible as they both belong to different Category!."

It happens because `_compute_qty_received` incorrectly converts
quantities.

The computation of the quantity received for kits is done in 2 steps:
first we compute the quantity the same way we do it for a regular
product, then we overwrite the quantity with the value computed for
kits.

We can compute the quantity correctly at once by calling `super` only on
lines which are not kits.

opw-2302807

closes odoo/odoo#55039

X-original-commit: 50ba6d18f9accd0969636d388b3a0b4bb9099b50
Signed-off-by: Nicolas Martinelli (nim) <771435c469f83f6aa9c405ac5e1ed06314a94f2d@odoo.com>

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