[kovarex] [0.18.38] Upgrade Order & Delete Order race conditioning

[ElderAxe]

How to reproduce:
1. Try to upgrade lots of yellow belts far from logistic storage.
2. After bots got the item from storage, delete the belts with delete planner which waiting for an upgrade and place another ghost bp. like Balancer.

What happens:
Bots carrying upgraded belts reach first and upgrade the belt. Which causes delete order to be canceled. So the items on blueprints cannot be placed on map.

What should happen:
When the delete order is placed for an item, it should cancel the upgrade order for that item.

[kovarex]

Thanks for the report, fixed for the next release.