Current amount can exceed original amount

[bymayo]

Describe the bug

When editing a voucher code in the CMS the "Current Amount" can exceed the "Original Amount" of the voucher. Our client flagged this up as they didnt want users (That are managing the orders) to be able to edit vouchers to go higher than the amount purchased.

Steps to reproduce

Edit a Voucher Code (Gift Voucher > Voucher Codes)

Craft CMS version

4.4.8

Plugin version

3.0.7

Multi-site?

No

Additional context

No response