Suspend a Registration

## User Stories
As an Examiner
I want to suspend a previously approved Registration
So that the Registration is no longer Active.

As an Examiner
I want to be challenged with a Confirmation Modal
So that I can confirm that I wish to suspend the Registration.

As an Examiner
I want to be able to compose a short "Email to Completing Party" message
So that this text can be incorporated into the suspension notification email sent to the Applicant.

As an Examiner
I want an Event to the added to the Registration's History log when it is suspended
So that I can view the history of changes made to the Registration.

As an Examiner
I want to be shown a "Suspended" indicator when viewing the Registration details on the Examiner dashboard after the Registration has been suspended
So that I can confirm that the Registration is suspended.

As an Applicant
I want to receive an email when my previously approved Registration has been suspended
So that I will know that I must cease all short-term rental activities.

As an Applicant
I want to be shown a "Suspended" indicator when viewing the Registration details on the Applicant dashboard after the Registration has been suspended
So that I can confirm that the Registration is suspended.

As an Applicant
I want the ability to upload additional documents to the "Supporting Documents" section of my Registration
So that I can support my case for Registration reinstatement.

## User Experience
[Before Suspending, Examiner Dashboard](https://www.figma.com/design/a4H3s0ebAxwv8ZniyNAt4g/STRR-Host-Registration---Redesign?node-id=3487-51765&t=q8ikbLbOJYgE8Bq2-1)

## Additional Details
- An Examiner can only suspend a Registration that is active and not currently subject to an NOC.
- A Registration that has been cancelled or has expired cannot be suspended.
- If a Registration expires while it is suspended, the Registration continues to be suspended even if the Registration is renewed.
- An Examiner may edit a suspended Registration because the underlying approval is still valid.
- A Property for which the Registration has been suspended cannot be used for short-term rentals.

## Acceptance Criteria
- [ ] **Scenario: Suspend a previously approved Registration**
- Given a Registration has been previously approved
- When an Examiner clicks on "Suspend Registration"
- Then the Registration should be suspended and no longer active

- [ ] **Scenario: Confirmation Modal challenges the user**
- Given an Examiner is about to suspend a Registration
- When they are presented with a Confirmation Modal
- Then the Examiner must click "Yes, Suspend" to confirm their decision before suspending the Registration

- [ ] **Scenario: Compose a short "Email to Completing Party"**
- Given an Examiner is suspending a Registration
- When the Examiner composes a short message for the Applicant in the "Email to Completing Party" section
- Then this text should be incorporated into the suspension notification email

- [ ] **Scenario: Add an Event to the Registration's History log**
- Given a Registration is suspended by an Examiner
- When the suspension occurs
- Then an Event should be added to the Registration's History log

- [ ] **Scenario: Show "Suspended" indicator on Examiner dashboard**
- Given a Registration has been suspended
- When viewed by an Examiner on their dashboard
- Then a "Suspended" indicator should be shown

- [ ] **Scenario: Send suspension notification email to Applicant**
- Given a Registration is suspended by an Examiner
- When the suspension occurs
- Then a suspension notification email incorporating the short message composed by the Examiner should be sent to the Applicant

- [ ] **Scenario: Show "Suspended" indicator on Applicant dashboard**
- Given a Registration has been suspended
- When viewed by an Applicant on their dashboard
- Then a "Suspended" indicator should be shown

- [ ] **Scenario: Allow uploading additional documents for reinstatement**
- Given a suspended Registration
- When the Applicant wants to support their case for Registration reinstatement
- Then the Applicant should have the ability to upload additional documents in the "Supporting Documents" section