Like the title says my suggestion is having two separate options for the language of the UI and the voices.
That way, for those who want to use the UI in a specific language but the voices in any other language, they would still have that option.
For example: I might want to use my language for the UI but prefer the voice acting in English instead of my own
Actually, they kind of already did that (for Steam at least, not sure about Windows 10 store).
If you choose English as your language in Steam properties then the voices ingame are in English and you can still change the UI language ingame to any other language and keep said voices