I also translated to French the announcement page about the disabled ULS, on the MediaWiki wiki (unfortunately the URL to that page is hidden in a tvar, so the link brings to the English-only version.
For now I added a language bar at top of the wiki page: if you want to translate the announcement, append the language code to the announcement page.
May be this page could use the Translate extension, however I cannot mark this page for translation on that wiki. If the Translate extension is used to translate the announcement, the existing translated page will be kept until one starts generating pages with it (otherwise it will remain in the page history).