Forced use of Proton compatibility tool

Game has a Linux native version that is currently incomplete that will be downloaded unless you force use of Proton. Force Proton so that Steam downloads/installs the Windows version of the full game. The Windows version of the game works without issues with Proton.

In the Steam Library > right click game and select properties > compatibility tab > tick the box that says "Force the use of a specific Steam Play compatibility tool"