When a Create a new translation window is shown and more than 6 Languages are defined, some of them won't be visible in the "Select a language for the new translation" field.

Steps to reproduce
1. Clean installation of Ibexa DXP v3
2. Login into the BO as admin user.
3. Create 6 additional Languages in Admin > Languages.
4. Go to any Content view > Translations tab. Click on the "plus" button to create a new translation.
5. Click on the "Select a language for the new translation" field.

Result:
Only 5 Languages will be visible and therefore only those 5 can be selected.

Expected result:
All languages are available for selection.