Added missing state clear after the nobody participated message

KfChatDotNetBot/Services/KasinoRain.cs

@@ -91,6 +91,7 @@ public class KasinoRain : IDisposable
                 await _kfChatBot.SendChatMessageAsync(
                     $"Nobody participated in {creator.User.FormatUsername()}'s rain!",
                     true, autoDeleteAfter: TimeSpan.FromSeconds(30));
+                await RemoveRainState();
                 continue;
             }
 
@@ -142,4 +143,4 @@ public class KasinoRainModel
     public required DateTimeOffset Started { get; set; }
     public required decimal RainAmount { get; set; }
     public required DateTimeOffset PayoutWhen { get; set; }
-}
+}