refactor: remove unused friendly_name field from TOTP stage config

- Removed null friendly_name attribute from authenticator TOTP stage configuration
- Simplified stage configuration by eliminating unused optional field

Author: CodeMonkeyCybersecurity

pkg/hecate/default_flows.go

@@ -939,7 +939,6 @@ entries:
     model: authentik_stages_authenticator_totp.authenticatortotpstage
     attrs:
       configure_flow: null
-      friendly_name: null
       digits: 6
 
   - identifiers: