Unsaved changes warning (RTC-41899)

The unsaved changes warning in New gift card view is improved.

Gift Card Service (RTC-43213)

GiftCardService is updated to .NET 8.

Gift card transactions view performance (RTC-33646)

The performance of the Gift card Transactions grid is improved.

GiftCard API documentation (RTC-44537)

The GiftCard service documentation in Swagger is updated with more information about transaction types.