src/Admin/OrdersAdmin.php
public function getList()
    {
        $list = parent::getList();

        if ($this->modelClass == Order::class) {
            // Exclude hidden statuses
            $list = $list->exclude('Status', Order::config()->hidden_status); 
            $this->extend('updateList', $list);
        }

        return $list;
    }
public function getList()
    {
        $list = parent::getList();

        if ($this->modelClass == Order::class) {
            // Exclude hidden statuses
            $list = $list->exclude('Status', Order::config()->hidden_status); 
            $this->extend('updateList', $list);
        }

        return $list;
    }
Restrict list to non-hidden statuses