aldryn-forms always redirects on the default language after submit

[yvladislav]

How to reproduce

1. Configure the form to redirect after the submit
2. Fill the form with data being on the non-default language
3. Submit the form

Expected behavior:

• You are redirected to the selected page without the language changing

Current behavior:

• The language is changed right after the form is submitted and after that, you are redirected to another page