Admin UI: Slugs of secondary language is not auto-filled

[chladog]

Describe the bug
For default language when we write Product name or Collection name then the slug is being filled in proper format automatically. This feature does not work when we switch to secondary language.

To Reproduce
Steps to reproduce the behavior:

1. Have multilingual setup
2. Add new product
3. Type Product name and observe slug being autofilled (default language)
4. Switch to second language
5. Type Product name and observe slug not being autofilled

Expected behavior
This handy UX feature should be present for all languages.

Environment (please complete the following information):

• @vendure/core version: v16.1