Appeals: Modified independent repeat submission handling

## User Story

As a student who has already been approved for Modified Independent status, I want the Modified Independent Appeal to be available but advise the student that they do not need to resubmit it as they are already approved. This prevents

## Acceptance Criteria

### Modified Independent Status – Approved

- [x] If the student has the status approved for Modified Independent status on their profile the following logic will apply

- [x] Keep the Modified Independent Appeal visible on the Appeals page.
- [x] When the student selects the appeal type validate if the modified independent status is approved. If yes display a red banner message that advises they are already approved just below the current appeal description content)
- [x] They are not able to proceed to the form
- [x] If they have selected this check box then when they select the request appeal show the red validation error but update the content from:
> At least one appeal is required.

to

> At least one valid appeal is required.

### Messaging

> **Modified Independent status already approved**
> You have already been approved for Modified Independent status. You do not need to submit this appeal again.

## Additional Context

The Modified Independent Appeal is a non-bundled appeal.
The appeal should remain visible even when the student has already been approved for Modified Independent status.
When the student has already been approved, the appeal should be presented as informational and should not imply that another submission is required.
In SFAS, students are required to resubmit for Modified Independent status regularly. In SIMS, the intention is for the student to complete the process once and retain the approved status.
The existing Modified Independent approval should continue to apply without requiring the student to resubmit the appeal.

## QA Notes

1 – Student approved for Modified Independent status

**Given** a student has been approved for Modified Independent status
**When** they navigate to the Appeals page
**Then** the Modified Independent Appeal is displayed
**And** the student is advised that they do not need to complete or submit the appeal because they are already approved for Modified Independent status.

2 – Student not approved for Modified Independent status

**Given** a student has submitted their application and accepted their funding assessment
**And** the student has not been approved for Modified Independent status
**When** they navigate to the Appeals page
**Then** the Modified Independent Appeal continues to be displayed in accordance with existing eligibility rules
**And** the student can complete and submit the appeal as required.

3 – No impact to other appeals

**Given** a student is eligible for other appeal types
**When** they access the Appeals page
**Then** all other appeals continue to display and function according to existing business rules.

## Business Context

If an applicant has already been approved for Modified Independent status, the Modified Independent Appeal must remain visible on the Appeals page but must clearly advise the applicant that they do not need to complete or submit the appeal because their Modified Independent status has already been approved.