I inserted a Commons image using VE into a Hebrew Wikipedia article.
The image has structured media descriptions in English and Hebrew. Despite this, the description in the media insertion dialog appeared in English. Screenshot:
I'd expect it to appear in Hebrew, given that it's the Hebrew Wikipedia. Even nicer would be to have it in Hebrew by default if it's available, and to show a language selector to select other languages, but that would be just a nice bonus.
The file, for reference: https://commons.wikimedia.org/wiki/File:Empty_egg_shelf_in_Jerusalem,_April_2020.jpg