[FIX] stock: UoM in qty check
[FIX] stock: UoM in qty check

- Enable lot tracking on Product A
- UoM of Product A is kg, but Purchase UoM is lb(s)
- Create a PO for 200 lb(s) of Product A, confirm
- Go in the picking, specify the lots.
- Validate, and error: 'You have a difference between the quantity...'

This is because `lot_quantities` contains the quantities in kg, while
`operation.product_qty` is in lb(s).

opw-705259

ygol/odoo,ygol/odoo,ygol/odoo,dfang/odoo,hip-odoo/odoo,dfang/odoo,dfang/odoo,dfang/odoo,ygol/odoo,ygol/odoo,ygol/odoo,hip-odoo/odoo,dfang/odoo,hip-odoo/odoo,hip-odoo/odoo,hip-odoo/odoo,dfang/odoo,hip-odoo/odoo,ygol/odoo