Corpus form: filter field language options from corpus metadata #1816
Description
Is your feature request related to a problem? Please describe.
In the corpus form, you can select the language for text fields. The dropdown here includes hundreds of languages, which is cumbersome to work with.
But at this point, the user already filled in the languages used in the corpus, in the first step of the form. So this step can feel needlessly complicated.
Describe the solution you'd like
Instead of presenting all languages, the dropdown can just show the selection from corpus.definition.meta.languages.
In addition, there should always be an option for "unknown" and "English". The latter because metadata fields commonly use the language of the interface, rather than the language of the content.
Describe alternatives you've considered
Keep the dropdown as-is.
Additional context
Screenshot of the current dropdown:
