Romain Derie
63131c2584
Before this commit:
When a coupon_program's coupon was giving a reward on a SO and then the
recompute was removing that reward (eg the SO did not met the requirements
anymore) the coupon would not be reset and would be lost.
Now:
If a coupon's reward got removed for some reason, the coupon got reset to a
valid state (`new`) so it can be used again.
Step to reproduce:
- Generate a coupon from a coupon program that needs requirements (eg $300)
- Add that coupon to a SO that has a total over $300
- Coupon is set as `used` and the reward is granted
- Remove some products to set the SO total below $300
- Recompute coupon, the reward is correctly removed but the coupon is still
set as `used` so it won't be usable again and is basically lost.
Closes #3062