fix: send filters to new clients

NostrServices/Services/NostrListener.cs

@@ -42,7 +42,7 @@ public class NostrListener : IDisposable
             _ = nostrWebsocketClient.Communicator.Stop(WebSocketCloseStatus.NormalClosure, string.Empty);
         }
     }
-    
+
     private void AddCommunicators(List<Uri> relays)
     {
         var missing = relays.Where(a => _client.FindClient(ClientName(a)) == null);
@@ -51,6 +51,14 @@ public class NostrListener : IDisposable
         {
             _client.RegisterCommunicator(comm);
             comm.Start();
+            var client = _client.FindClient(comm.Name);
+            if (client != default)
+            {
+                foreach (var (k, v) in _subscriptionToFilter)
+                {
+                    client.Send(new NostrRequest(k, v));
+                }
+            }
         }
     }
 
@@ -122,7 +130,7 @@ public class NostrListener : IDisposable
 
                 var relays = await db.Relays.Select(a => a.Url).ToListAsync(cancellationToken: stoppingToken);
                 _nostrListener.AddCommunicators(relays);
-                
+
                 await Task.Delay(TimeSpan.FromMinutes(10), stoppingToken);
             }
         }