Fix SSO authentication not working due to missing agreement boolean (#9915)

Fix #9906

app/models/concerns/omniauthable.rb

@@ -63,6 +63,7 @@ module Omniauthable
       {
         email: email || "#{TEMP_EMAIL_PREFIX}-#{auth.uid}-#{auth.provider}.com",
         password: Devise.friendly_token[0, 20],
+        agreement: true,
         account_attributes: {
           username: ensure_unique_username(auth.uid),
           display_name: display_name,