Overview
When we originally added the cancel fee/fine as an error option (see Fee/Fine Details page ERROR button and Fees/Fines History page ellipsis option ERROR), it was decided that only fees/fines with no ACTIONS against them would be allowed to be cancelled as an error. We need to change that validation to allow a fee/fine to be cancelled as an error if the remaining balance equals the billed amount, regardless of ACTIONS that may have taken place.
 
Real Life Example

1. A patron asks to rent a carrel at the Main Library and pays the 30.00 fee.

2. The patron realizes that the Science Library is a better location for her to use.

3. The patron comes back to Main Library to request a refund of the 30.00.

4. The library staff member opens the "Refund fee/fine" modal and refunds the 30.00 to the patron.

5. After this happens, the fee/fine Remaining amount will go from 0.00 back to the original 30.00 the patron was billed.

6. The library staff member wants to then cancel the fee/fine, but cannot because there have been ACTIONS on it.

7. Instead, the library staff member will have to waive the fee/fine. This implies that the patron still has the carrel in Main Library, but we have decided to not make them pay for it.

8. That is not actually what happened in this case. We need to be able to cancel the fee/fine as an error in situations like this.