fix CS0234: use global:: prefix for Android.Content.Res.Configuration in OsuGameActivity.cs

Agent-Logs-Url: https://github.com/winnerspiros/osu/sessions/cbe1fe2e-478b-486a-b91a-8e76e0c928d0

Co-authored-by: winnerspiros <1675249+winnerspiros@users.noreply.github.com>

Author: Copilot

osu.Android/OsuGameActivity.cs

@@ -964,7 +964,7 @@ public void SurfaceDestroyed(ISurfaceHolder holder)
             }
         }
 
-        public override void OnConfigurationChanged(Android.Content.Res.Configuration newConfig)
+        public override void OnConfigurationChanged(global::Android.Content.Res.Configuration newConfig)
         {
             base.OnConfigurationChanged(newConfig);
             bool wasDeX = IsDeX;
@@ -987,7 +987,7 @@ public override void OnConfigurationChanged(Android.Content.Res.Configuration ne
             }
         }
 
-        private void updateDeXStatus(Android.Content.Res.Configuration? config)
+        private void updateDeXStatus(global::Android.Content.Res.Configuration? config)
         {
             bool wasDeX = IsDeX;
             IsDeX = (config ?? Resources?.Configuration)?.UiMode.HasFlag(UiMode.TypeDesk) ?? false;