When an account is deleted the security operator needs to cleanup any remaining permission tuples for a given account

[nexus49]

When an account is delete we need to cleanup any tuples in fga for that account, primarily assigned user roles.

For this feature we should likely use a new KCP feature developed here: https://github.com/orgs/platform-mesh/projects/1/views/1?filterQuery=-status%3AOngoing+-type%3AEpic+fina&pane=issue&itemId=106709845&issue=platform-mesh%7Cbacklog%7C59

[nexus49]

This ticket is blocked until workspace finalization is available