TFRS - Admin users can delete new user accounts before mapping

**Description:**

IDIR Admin and BCeID Managing Users can delete user accounts before successful mapping

Description:

As an IDIR user with the Administrator role or a BCeID user with the Managing Users I want to be able to delete user accounts that have not successfully mapped so that I can resolve duplicate accounts made in error.

Purpose:
Currently only a developer can remove duplicate accounts. Unfortunately, this issue occurs too frequently, and the Low Carbon Fuels Branch / fuel suppliers needs to be able to manage it without having to go to a developer.

**Wireframe:**

**Purpose and benefit to user:**
Low Carbon Fuels Branch / fuel suppliers needs to be able to manage it without having to go to a developer.

**Acceptance Criteria:**

- [ ] Given I am a IDIR Admin, When I am managing supplier BCeID users, then then I want to be able to delete the user prior to the account being mapped
- [ ] Given I am a BCeID Managing Users, When I am adding new BCeID users and make a mistake, then I want to be able to delete the user prior to the account being mapped

**Development Checklist:**
- [ ] A. Develop a function to determine if a user account has been successfully mapped.
- [ ] B. Create a user interface (UI) for IDIR Admin and BCeID Managing Users to delete user accounts that have not been successfully mapped.
- [ ] C. Implement a check in the delete function to ensure that only IDIR Admin and BCeID Managing Users can delete accounts that have not been mapped.
- [ ] D. Implement a check in the delete function to prevent deletion of mapped user accounts.

**Notes:**

No files, tests, or entry points are named. Start by locating the supplier BCeID user-management UI and account-delete function, then verify the acceptance criteria and checklist permission and mapping checks; done means eligible unmapped accounts can be deleted by the specified roles while mapped accounts cannot.

Written by the indexing model from the issue text.