add force sso key

app/controllers/account_configs_controller.rb

@@ -10,7 +10,8 @@ class AccountConfigsController < ApplicationController
     AccountConfig::ALLOW_TO_RESUBMIT,
     AccountConfig::ESIGNING_PREFERENCE_KEY,
     AccountConfig::FORM_WITH_CONFETTI_KEY,
-    AccountConfig::DOWNLOAD_LINKS_AUTH_KEY
+    AccountConfig::DOWNLOAD_LINKS_AUTH_KEY,
+    AccountConfig::FORCE_SSO_AUTH_KEY
   ].freeze
 
   InvalidKey = Class.new(StandardError)

app/models/account_config.rb

@@ -35,6 +35,7 @@ class AccountConfig < ApplicationRecord
   ESIGNING_PREFERENCE_KEY = 'esigning_preference'
   WEBHOOK_PREFERENCES_KEY = 'webhook_preferences'
   DOWNLOAD_LINKS_AUTH_KEY = 'download_links_auth'
+  FORCE_SSO_AUTH_KEY = 'force_sso_auth'
 
   DEFAULT_VALUES = {
     SUBMITTER_INVITATION_EMAIL_KEY => {