Why can a 404 page return 200?

Question

1C-Bitrix

Hello, I re-read all the articles on the issue of 404 pages, but could not solve my problem.
The problem is that if I call the prologue, the 404 starts working as it should, but the pagination on the directory stops working. Tried removing conditions from urlrewrite - didn't help.
Code 404

<?// require_once($_SERVER["DOCUMENT_ROOT"]."/bitrix/modules/main/include/prolog_before.php"); Если расскоментить, то не будет работать пагинация, но будет отдавать 404 ответ сервера 
include_once($_SERVER['DOCUMENT_ROOT'].'/bitrix/modules/main/include/urlrewrite.php');

CHTTP::SetStatus("404 Not Found");
@define("ERROR_404","Y");
// define("HIDE_SIDEBAR", true);

require($_SERVER["DOCUMENT_ROOT"]."/bitrix/header.php");

$APPLICATION->SetTitle("Страница не найдена");?>

    <div class="bx-404-container">
        <div class="bx-404-block"><img src="<?=SITE_DIR?>images/404.png" alt=""></div>
        <div class="bx-404-text-block">Неправильно набран адрес, <br>или такой страницы на сайте больше не существует.</div>
        <div class="">Вернитесь на <a href="<?=SITE_DIR?>">главную</a> или воспользуйтесь картой сайта.</div>
    </div>




<?require($_SERVER["DOCUMENT_ROOT"]."/bitrix/footer.php");?>

urlrewrite code

<?php
$arUrlRewrite=array (
  1 => 
  array (
    'CONDITION' => '#^/bitrix/services/ymarket/#',
    'RULE' => '',
    'ID' => '',
    'PATH' => '/bitrix/services/ymarket/index.php',
    'SORT' => 100,
  ),
  4 => 
  array (
    'CONDITION' => '#^/personal/order/#',
    'RULE' => '',
    'ID' => 'bitrix:sale.personal.order',
    'PATH' => '/personal/order/index.php',
    'SORT' => 100,
  ),
  8 => 
  array (
    'CONDITION' => '#^/personal/#',
    'RULE' => '',
    'ID' => 'bitrix:sale.personal.section',
    'PATH' => '/personal/index.php',
    'SORT' => 100,
  ),
  11 => 
  array (
    'CONDITION' => '#^/catalog/#',
    'RULE' => '',
    'ID' => 'bitrix:catalog',
    'PATH' => '/catalog/index.php',
    'SORT' => 100,
  ),
  6 => 
  array (
    'CONDITION' => '#^/store/#',
    'RULE' => '',
    'ID' => 'bitrix:catalog.store',
    'PATH' => '/store/index.php',
    'SORT' => 100,
  ),
  0 => 
  array (
    'CONDITION' => '#^/rest/#',
    'RULE' => '',
    'ID' => NULL,
    'PATH' => '/bitrix/services/rest/index.php',
    'SORT' => 100,
  ),
  2 => 
  array (
    'CONDITION' => '#^/blog/#',
    'RULE' => '',
    'ID' => 'bitrix:news',
    'PATH' => '/blog/index.php',
    'SORT' => 100,
  ),
  12 => 
  array (
    'CONDITION' => '#^/#',
    'RULE' => '',
    'ID' => 'bitrix:catalog',
    'PATH' => '/catalog.php',
    'SORT' => 100,
  ),
);