[Sync EN] ext/libxml: Clarify that `LIBXML_PARSEHUGE` raises limits rather than removing them (#5649)

[github-actions]

Commit: https://github.com/php/doc-en/commit/7dce5910421f42a97717220587841423ef1fa27a
PR: https://github.com/php/doc-en/pull/5649

Neue EN-Dateien (noch nicht übersetzt)

• reference/libxml/constants.xml