feat(mfa): allow disabling 2FA with a backup code when authenticator is lost

app/controllers/api/v1/profile/mfa_controller.rb

@@ -48,7 +48,8 @@ class Api::V1::Profile::MfaController < Api::BaseController
   def validate_otp
     authenticated = Mfa::AuthenticationService.new(
       user: current_user,
-      otp_code: mfa_params[:otp_code]
+      otp_code: mfa_params[:otp_code],
+      backup_code: mfa_params[:backup_code]
     ).authenticate
 
     return if authenticated
@@ -63,6 +64,6 @@ class Api::V1::Profile::MfaController < Api::BaseController
   end
 
   def mfa_params
-    params.permit(:otp_code, :password)
+    params.permit(:otp_code, :backup_code, :password)
   end
 end