Dead Zone fix for controller joystick drift

Made a new build with one bug fix for those who were having stick drift issues.

I had (falsely) assumed that Unreal automatically had some Dead Zone automatically part of their Enhanced Input system but it turns out not. When I was building the game I was using a fairly new XBox controller that apparently doesn't have any drift so I didn't notice any issue. But several players complained about drift (always to the right?) and I luckily had an older XBox One controller nearby that had some handy stick drift that manifested itself in the game. Implementing the Dead Zone modifier fixed the issue for me so I'm hoping this is the resolution for everyone!