[Sync EN] Fix class method signatures

PR: `https://github.com/php/doc-en/pull/5360` (2026-06-03)

**Файлы RU для обновления**
- `language-snippets.ent`
- `reference/pdo/pdostatement/setfetchmode.xml`
- `reference/phar/Phar/setStub.xml`
- `reference/phar/PharData/setStub.xml`
- `reference/reflection/reflectionclass/getstaticpropertyvalue.xml`

