Propose changing the default contribution language when switching countries

Problem

From Yaron: "Hey everyone, I wanted to raise a concern about the app and web behavior; most of the products documented in Israel have their image tagged as English, even though the product is clearly in Hebrew. Is there a way to configure a default language for image tagging in the app? Is there an easy way to change the language using the web interface? Thanks :)"

<img src="https://github.com/openfoodfacts/smooth-app/assets/1689815/d2e79a79-1cff-4f6c-9b1c-ceb753123356" height="400px">

Tasks

• [ ] Put the languages of the current country at the top of the language list, in a specific section
• [ ] Propose changing the défaut contribution language when switching countries
• [ ] Propose changing the défaut UI language when switching countries
• [ ] Use MLKit to spot the language of a newly taken image, and check it's in the right language (and propose an optional language change if it's not coherent)
• [ ] Use MLKit to propose fixing existing selected images and put them in the right language
• [ ] Use MLKit to propose fixing existing fields and put them in the right language