GraphQL Client is not able to reconnect if graphQL server restart

Hi,

GraphQL Client is not able to reconnect if graphQL server restart.
In my local copy below is the change I have added.

```csharp
GraphQL.Client --> Http --> GraphQLHttpWebSocket.cs --> _receiveResultAsync(...) -->
.....
catch (Exception e)
{
**await _closeAsync().ConfigureAwait(false);
clientWebSocket?.Dispose();**
Debug.WriteLine($"exception thrown while receiving websocket data: {e}");
throw;
}
```

You may also have some better way.

```
-----------------------------------------------------------------------------------------------
WebSocketException: The remote party closed the WebSocket connection without completing the close handshake. (WebSocketError ConnectionClosedPrematurely, ErrorCode 0, NativeErrorCode 0
WebSocketException: The remote party closed the WebSocket connection without completing the close handshake. (WebSocketError ConnectionClosedPrematurely, ErrorCode 0, NativeErrorCode 0
System.NullReferenceException: Object reference not set to an instance of an object.
at GraphQL.Client.Http.Websocket.GraphQLHttpWebsocketHelpers.<>c__DisplayClass0_0`1.b__3(Exception e)
System.Net.WebSockets.WebSocketException (0x80004005): The remote party closed the WebSocket connection without completing the close handshake. ---> System.IO.IOException: Unable to transfer data on the transport connection: Broken pipe. ---> System.Net.Sockets.SocketException: Broken pipe
--- End of inner exception stack trace ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Net.WebSockets.ManagedWebSocket.d__56.MoveNext()
at System.Net.WebSockets.ManagedWebSocket.d__56.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at GraphQL.Client.Http.Websocket.GraphQLHttpWebSocket.<_sendWebSocketRequest>d__24.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at GraphQL.Client.Http.Websocket.GraphQLHttpWebsocketHelpers.<>c__DisplayClass0_0`1.<b__5>d.MoveNext()
```