Format YYYY-MM-DD into Mon YYYY; falls back to the raw date when invalid.
Formats with the target language (falling back to en) so the synthesized
fallback title stays locale-appropriate for Latin non-EN locales (e.g.
sv/fr) instead of emitting an English month label on every page.
Parameters
date: string
ISO article date
lang: string
Target language code driving the month-label locale
Format
YYYY-MM-DDintoMon YYYY; falls back to the raw date when invalid.Formats with the target language (falling back to
en) so the synthesized fallback title stays locale-appropriate for Latin non-EN locales (e.g.sv/fr) instead of emitting an English month label on every page.