Disable automatic retry of failed discord RPC connections

osu.Desktop/DiscordRichPresence.cs

@@ -43,6 +43,10 @@ namespace osu.Desktop
             };
 
             client.OnReady += onReady;
+
+            // safety measure for now, until we performance test / improve backoff for failed connections.
+            client.OnConnectionFailed += (_, __) => client.Deinitialize();
+
             client.OnError += (_, e) => Logger.Log($"An error occurred with Discord RPC Client: {e.Code} {e.Message}", LoggingTarget.Network);
 
             (user = provider.LocalUser.GetBoundCopy()).BindValueChanged(u =>