Ensure Subgraph Config consistency.

Author: michaelstaib

src/HotChocolate/Fusion/src/CommandLine/Commands/SubgraphConfigSetHttpCommand.cs

@@ -69,6 +69,8 @@ private static async Task ExecuteAsync(
             var config = await PackageHelper.LoadSubgraphConfigAsync(configFile.FullName, cancellationToken);
 
             var clients = config.Clients.ToList();
+            
+            clients.RemoveAll(t => t is HttpClientConfiguration);
             clients.Add(new HttpClientConfiguration(uri, clientName));
 
             var configJson = PackageHelper.FormatSubgraphConfig(config with { Clients = clients });

src/HotChocolate/Fusion/src/CommandLine/Commands/SubgraphConfigSetWebSocketCommand.cs

@@ -69,6 +69,8 @@ private static async Task ExecuteAsync(
             var config = await PackageHelper.LoadSubgraphConfigAsync(configFile.FullName, cancellationToken);
 
             var clients = config.Clients.ToList();
+            
+            clients.RemoveAll(t => t is WebSocketClientConfiguration);
             clients.Add(new WebSocketClientConfiguration(uri, clientName));
 
             var configJson = PackageHelper.FormatSubgraphConfig(config with { Clients = clients });