Hiding a page doesn't hide its translations

Steps to reproduce:

1. Hide all the children pages of Sandbox and XWiki with Hidden page
2. Hide the Sandbox and XWiki page
3. Observe the left Navigation panel

Expected results: All the pages that are marked with Hidden page aren't showing in the Navigation panel.

Actual results: The Sandbox and XWiki pages still show in the Navigation panel even if they are marked as hidden.