Given a staff person selects "check for open transactions/delete user,"
the user does not have any open transactions and the staff person confirms to delete the user.
Then the system does delete the user.
This deletion process should create a confirmation toast message in the lower right corner of the screen:
- IF the deletion was successful:
- Green message: "User [last name], [first name] deleted successfully."
- Red message: "User [last name], [first name] could not be deleted." OR any other more detailed error message that already be implemented.