Localisation: Translate the "Library" section header into other languages

[erikjanwestendorp]

Added Dutch and Spanish translations for the Library section to improve localization coverage and consistency in the backoffice.

[github-actions]

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[Copilot]

Pull request overview

Note

Copilot was unable to run its full agentic suite in this review.

Adds missing locale strings for a new/updated “Library” section label in Dutch and Spanish language bundles.

Changes:

• Added sections.library translation in nl.ts
• Added sections.library translation in es.ts

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
src/Umbraco.Web.UI.Client/src/assets/lang/nl.ts	Adds Dutch translation for the new sections.library key
src/Umbraco.Web.UI.Client/src/assets/lang/es.ts	Adds Spanish translation for the new sections.library key

[AndyButland]

Responding more fully to one of the automated comments - we don't require all translations for all languages, but as this is a pretty important one - a section header - I think we should do so in the case. It would be a bit odd to ship with all section headers translated apart from this one in some languages.

I've leaned on AI to do this and have spot checked some. Also taken the opportunity to clean-up some of the keys that are no longer used in the backoffice (and don't exist in the en.ts file).

[AndyButland]

Thanks for this @erikjanwestendorp - good catch, and something we should fix up. As you'll see I've piggy-backed on this to address for the other languages too. Once merged I'll cherry-pick this in so we have it for 18.0.

Have confirmed in local testing that the translated section headers are coming through.

[AndyButland]

Cherry-picked to release/18.0 in cd23fc7, so will be part of 18.0.0-rc2.