[RFC][17.0][stock_secondary_unit] Check secondary unit to disable back order creation on pickings

[angelmoya]

When I configure a product with secondary unit, and send to customer, if the secondary unit is estimated and I don't send estimated quantity, Odoo propose to do back order.

For example:

Ham piece of 6,5 Kg, I sell one piece (secondary unit) of 6,5 Kg, because the price is for kg.

When I do the pickig, the piece is 6,45Kg, as I send in kg, the sistem detect that sale order is for 6,5kg and propose to create backorder for 0,05kg.

As I use stock_secondary_unit module I can set that I send one piece in stock.move.line. The scope is to prevent the creation of backorder if I send all quantity in secondary units.