[FIX] stock_available_mrp: don't force type
[FIX] stock_available_mrp: don't force type

In Odoo change odoo/odoo@3d34d58 the products with Kit BoMs couldn't
longer be other than `consu`. This was reverted in odoo/odoo@6c4623a
and some products are raising errors when forcing the type

OCA/stock-logistics-warehouse,OCA/stock-logistics-warehouse,OCA/stock-logistics-warehouse,OCA/stock-logistics-warehouse