gw-coupons-exclude-products.php: Added functionality to exclude discounts on options of a product field.
#1038
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Context
⛑️ Ticket(s): https://secure.helpscout.net/conversation/2856409848/78480
Summary
Updating the snippet so it is possible to exclude product Option fields from a coupon.
For example, the customer has a Product field with a price of $100, and an Option field (attached to the Product field) with a price of $10. If the user applied a 100% coupon, this should not apply to the Option field, so the form total should be $10.
Loom:
https://www.loom.com/share/1149b9eed4d74afbac8d94c5ae2a9e0a