Fix #815, TaskCanceledException when calling service from Dispose(Async) by avoiding Result-Handling task from being cancelled (#816)

Author: FrankBakkerNl

src/Client/NetDaemon.HassClient/Internal/HomeAssistantConnection.cs

@@ -76,7 +76,9 @@ private async Task<Task<HassMessage>> SendCommandAsyncInternal<T>(T command, Can
             // this task will be returned and handled by caller
             var resultEvent = _hassMessageSubject
                 .Where(n => n.Type == "result" && n.Id == command.Id)
-                .FirstAsync().ToTask(cancelToken);
+                .FirstAsync().ToTask(CancellationToken.None);
+            // We dont want to pass the incoming CancellationToken here because it will throw a TaskCanceledException
+            // when calling services from an Apps Dispose(Async) and hide possible actual exceptions
 
             await _transportPipeline.SendMessageAsync(command, cancelToken);