Do not use negative quantity for carrier cost computation
A little bit like #7104 (closed), the carrier cost computation on the sale should not use the return lines.
This instance will be upgraded to Heptapod 1.3.1 (GitLab 16.9.3) on 2023-03-28 at 17:00 UTC+1
A little bit like #7104 (closed), the carrier cost computation on the sale should not use the return lines.