UNHUMAN - Hotfix for Linux/Proton compatibility

• Dropdown menus are now drawn in-game

instead of by the OS. This fixes dropdowns never opening when playing through Proton on Linux, and they now match the game's style everywhere.

• Added a forced redraw after switching

tabs, aimed at the black screen some Linux players hit on the TRADERS tab. If you still see it, please tell us on Discord.

No gameplay or save changes. Windows players are unaffected apart from the new dropdown look.