Custom Gift Card automatically removes tax amount even when region is configured for non-taxable gift cards

[dwene]

https://www.loom.com/share/8047da95b35c48d8bbd1251a7e1a0397

Expected Result: If I create a custom gift card of $100 it should give the customer $100
Actual Result: It gives the customer a $92.38 gift card.
Branch: latest develop
Fix: #561