[FIX] mrp: ensure all quantities are filled up
[FIX] mrp: ensure all quantities are filled up

Computing quantities of a kit product made only of consumable
failed as the quantities are not initialized.

This commit makes sure this kind of products don't have their quantities set up
in mrp and so are set to 0 in stock

closes odoo/odoo#37382

Signed-off-by: Simon Lejeune (sle) <1969d8dff896674c2d819e813f5e88ca826229ab@openerp.com>

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