Fix ArgumentError in /api/v1/admin/accounts/:id/action (#25386)

app/models/admin/account_action.rb

@@ -26,6 +26,7 @@ class Admin::AccountAction
   alias include_statuses? include_statuses
 
   validates :type, :target_account, :current_account, presence: true
+  validates :type, inclusion: { in: TYPES }
 
   def initialize(attributes = {})
     @send_email_notification = true
@@ -71,6 +72,10 @@ class Admin::AccountAction
         TYPES - %w(none disable)
       end
     end
+
+    def i18n_scope
+      :activerecord
+    end
   end
 
   private