The Language setting's native word (语言 / 언어 / 言語 / Idioma) only reached
settings search via the localized title in that word's own UI locale — so a
Chinese speaker on the default English UI could not find it by typing 语言.
Always-index the native word for 'language' in every supported language (plus
the previously-omitted Spanish native name Español), so speakers can locate and
switch to their language from any starting locale. Native words are
locale-invariant constants, so they are plain keyword literals with reviewed
localization-coverage allowlist entries.
Co-authored-by: Orca <help@stably.ai>
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