Use of TypeNameHandling.All causes JsonReaderException

### Description
When using TypeNameHandling.All on our serialization settings for dtfx, we receive the following exception:

```
Handler: Exception: Orchestration execution failed due to unhandled exception. : Newtonsoft.Json.JsonReaderException: Unexpected character encountered while parsing value: U. Path '', line 0, position 0.

[TaskFailedException]: Error reading JArray from JsonReader. Current JsonReader item is not an array: StartObject. Path '', line 1, position 1.
[TaskFailedExceptionDeserializationException]: Failed to deserialize exception from TaskActivity: Unhandled exception while executing task: Newtonsoft.Json.JsonReaderException: Error reading JArray from JsonReader. Current JsonReader item is not an array: StartObject. Path '', line 1, position 1.
at Newtonsoft.Json.Linq.JArray.Load(JsonReader reader, JsonLoadSettings settings)
at DurableTask.Core.Common.Utils.ConvertToJArray(String input) in /_/src/DurableTask.Core/Common/Utils.cs:line 210
at DurableTask.Core.AsyncTaskActivity`2.RunAsync(TaskContext context, String input) in /_/src/DurableTask.Core/TaskActivity.cs:line 107
at DurableTask.Core.TaskActivityDispatcher.<>c__DisplayClass14_1.<b__2>d.MoveNext() in /_/src/DurableTask.Core/TaskActivityDispatcher.cs:line 189
```

It looks like this was previously resolved for the Azure Functions durable extensions package https://github.com/Azure/azure-functions-durable-extension/pull/1392 which looks very similar to the TaskActivity code that's throwing here: https://github.com/Azure/durabletask/blob/6f902190fcf7f14d42b07e940f516e47525dbc18/src/DurableTask.Core/TaskActivity.cs#L107.

### Expected behavior
TypeNameHandling.All works and serializes properly.

### Actual behavior
The framework throws the exception above.

### App Details

- **Durable task package version (e.g. v1.8.3)**: 2.13.0

Comienza en src/DurableTask.Core/TaskActivity.cs, línea 107, donde se procesa la entrada de la actividad, y compárala con la corrección de durable-functions enlazada en el issue. Revisa Common/Utils.cs, línea 210, y verifica que TypeNameHandling.All ya no provoque la JsonReaderException informada ni el fallo al analizar JArray. Añade cobertura de regresión para la configuración de serialización si la estructura de pruebas existente lo permite.

Escrito por el modelo de indexación a partir del texto del issue.