UI: Change default hide cursor mode to OnIdle (#5906)

Co-authored-by: jcm <butt@butts.com>

src/Ryujinx.Ui.Common/Configuration/ConfigurationState.cs

@@ -784,7 +784,7 @@ namespace Ryujinx.Ui.Common.Configuration
             EnableDiscordIntegration.Value = true;
             CheckUpdatesOnStart.Value = true;
             ShowConfirmExit.Value = true;
-            HideCursor.Value = HideCursorMode.Never;
+            HideCursor.Value = HideCursorMode.OnIdle;
             Graphics.EnableVsync.Value = true;
             Graphics.EnableShaderCache.Value = true;
             Graphics.EnableTextureRecompression.Value = false;