[Sync EN] Document DOM node collection cloning failure for PHP 8.5

PR: `https://github.com/php/doc-en/pull/5877` (2026-09-24)

**Файлы RU для обновления**
- `reference/dom/dom/dom-dtdnamednodemap.xml`
- `reference/dom/dom/dom-htmlcollection.xml`
- `reference/dom/dom/dom-namednodemap.xml`
- `reference/dom/dom/dom-nodelist.xml`
- `reference/dom/domnamednodemap.xml`
- `reference/dom/domnodelist.xml`

