Investigate duplicate role issue

There may be an issue with duplicate roles being saved to LEAR db.

This issue was seen in Test by Kial.

Whoever picks this ticket up should investigate if this is a real issue.

**TODOs**
- [ ] check bad data in LEAR test database
- [ ] check FE/BE code to see verify if there are issues
- [ ] if this is determined to be an issue, create a ticket

More info:

Start by checking the duplicate-role data in the LEAR test database, then inspect the frontend and backend code paths involved in saving roles. The investigation is done when the data and code have been checked and the suspected issue is either ruled out or confirmed; if confirmed, create a follow-up ticket.

Written by the indexing model from the issue text.