[BUG]: No form validation on Cancel Request form #5637

Is there an existing issue for this?

• I have searched the existing issues

Current Behavior

Currently, when canceling a request, the following form appears:

Here "Cancellation reason *" is required. However, I can submit this form without entering this reason.

Expected Behavior

Validation error should occur if no reason is provided when trying to cancel a request.

Steps To Reproduce

1. Go to Requests
2. Cancel an existing request
3. Leave text form under "Cancellation reason *" blank
4. Hit "Yes. Cancel Request"

Environment

- OS:
- Node:
- npm:

Criteria for Completion

• When a bank user clicks on "Yes. Cancel Request" without entering reason, a validation error should appear and user should stay on form
• Appropriate tests updated

Anything else?

No response

Code of Conduct

• I've read the Code of Conduct and understand my responsibilities as a member of the Ruby for Good community