fix: preserve extra login options in MFA flows - #403

Bugbot Analysis Progress (1m 31s elapsed)

✅ Gathered PR context (3s)
✅ Completed bug detection (1m 28s)
✅ Posted analysis results (1s)

Final Result: Bugbot completed review - no issues found! ✅

Request ID: serverGenReqId_b9d844ab-ac67-4abf-86bd-f137f73faf49