Build the localized generic fallback sentence for a file the curated
table does not know about (or whose curated entry has no per-language
description).
Localized title of the file (already resolved via
getCuratedTitle) used to make the fallback sentence
meaningful even when no curated description exists
Build the localized generic fallback sentence for a file the curated table does not know about (or whose curated entry has no per-language description).