Steps to reproduce the bug:
- Create a storable product “P1” with BoM:
    - Add a tracked component
    - Add another component (no tracked)
- Create a MO to produce 1 unit of the product "P1":
    - Confirm
    - Unlock the MO
    - Set the "to consume" quantity of the tracked component to 0.

- Try to validate the MO

Problem:
A user error is triggered: “You need to supply Lot/Serial Number for
products:”

Solution:
If the quantity to consume is 0, ignore the serial number verification
for this move.

opw-3471256

closes odoo/odoo#134567

Signed-off-by: William Henrotin (whe) <whe@odoo.com>