added back otp check

Author: bhparijat

packages/auth/src/mfa/assertions/totp.ts

@@ -162,7 +162,8 @@ export class TotpMultiFactorAssertionImpl
     mfaPendingCredential: string
   ): Promise<FinalizeMfaResponse> {
     _assert(
-      this.enrollmentId !== undefined,
+      this.enrollmentId !== undefined &&
+      this.otp !== undefined,
       auth,
       AuthErrorCode.ARGUMENT_ERROR
     );