[Sync EN] Clarify http_build_query() behavior with objects and __toString() (#5529)

[github-actions]

Commit: https://github.com/php/doc-en/commit/f72c6031982a6f8152ef351d20f8e0d90e8f1612
PR: https://github.com/php/doc-en/pull/5529

Fichiers FR à mettre à jour

• reference/url/functions/http-build-query.xml