fix: #3582269 Set rendering_language and add missing langcode filters to views

Stephan Huberrequested to merge
issue/la_eu-3582269:3582269-duplicate-content-in into staging

Views filtered by language interface but rendered entities in their default language. Set rendering_language to language_interface on all displays of news, events, and cases views. Added missing langcode filter to cases view.

Closes #3582269

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