Companion Update for Ardennes DLC + Steam Deck Support

Minor fixes and content changes related to the upcoming Ardennes DLC.

We've also set Steam Deck support live for all users.

Let us know if you run into problems with either.

Cheers! ːsteamhappyː

[dynamiclink href="https://store.steampowered.com/app/3456990/Unity_of_Command_II__Ardennes_44/"][/dynamiclink]