Enable Requesters to Close Their Active Requests(Public and Private)

[junminahn]

Description:
Currently, there is no straightforward way to cancel active requests. As a result, the product team must rely on admins to manually reject these requests. This issue is especially problematic for public cloud product requests, where admins cannot review the create requests until the eMOU workflows are complete.

Technical Details:

• Add a new request status, CANCELLED to the database schema.
• Add document permission on request resources; cancel.
• Implement logic to remove associated entities for create requests when they are canceled:
  • Billing: Delete incomplete billing records associated with the request's license plate.
  • Tasks: Remove the SIGN_PUBLIC_CLOUD_MOU task linked to the request's EA ID.
• Add two new event types:
  • CANCEL_PUBLIC_CLOUD_REQUEST
  • CANCEL_PRIVATE_CLOUD_REQUEST
    These events will log cancellation actions.
• Update the requests panel to include filters for canceled requests.

Definition of Done:

• The original requester should have access to a "Cancel" button and be able to cancel their requests successfully.

[funtigr]

• The requests can be filtered by the Cancelled status.
• Only the person who actioned the request can Cancel it.
• If the Approver is mentioned in the product they can either Reject or Cancel the request.
• When the User has submitted an Edit request and visits it, they can edit the fields but not Submit, only Cancel. For Create request the fields are greyed out. So maybe in the future we would want to grey out the fields for Users for submitted Edit request.
• The Requests still don't have Billing Codes reflected. I think we can make a separate task for that:

[golebu2020]

Hi-Artem-I’ve double-checked your concerns regarding users' fields being editable after submitting an edit request. Upon reviewing, I confirmed that the form in the User Request Tab is not editable, as expected. The fields only become editable in the Admin Decision Tab, which aligns with the intended behaviour.

[funtigr]

Edit request now has fields greyed out for the User, so that's fixed.
The billing code is now reflected in all types of requests, so that's fixed too.
Closing the task.