[Forwardport] Cart Rule with negated condition over special price for configurable products

[nmalevanec]

Original Pull Request

#16342

Fixed Issues (if relevant)

1. Cart Sales Rule with negated condition over special_price does not work for configurable products #14020 Cart Sales Rule with negated condition over special_price does not work for configurable products

Manual testing scenarios

1. Enable the special_price for promo rule conditions:
   1. Stores > Attributes > Product
   2. Search for and edit special_price
   3. Storefront Properties: Use for Promo Rule Conditions: Yes
   4. Save
2. create new cart sales rule:
   1. Marketing > Cart Price Rules
   2. Add New Rule:
      1. Rule name = "Special Price Test"
      2. Website: select all
      3. Customer Groups: select all
      4. Coupon: "Specific Coupon"
      5. Coupon Code: "special"
      6. Actions: Discount Amount: "10"
      7. Actions: Apply the rule only to cart items matching the following conditions: "if ALL of these conditions are FALSE": "Special Price greater than 0.01"
      8. Leave all other fields to their defaults and save
3. In the front end, add a the child product of a configurable product to the cart, such that the child product has a special price set. This product should be the only one in the cart.
4. "View and Edit Cart" > "Apply Discount Code": special

[magento-engcom-team]

Hi @nmalevanec. Thank you for your contribution
Here is some useful tips how you can test your changes using Magento test environment.
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• @magento-engcom-team give me 2.3-develop instance - deploy vanilla Magento instance

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[ghost]

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[magento-engcom-team]

Hi @nmalevanec. Thank you for your contribution.
We will aim to release these changes as part of 2.3.1.
Please check the release notes for final confirmation.