ReceiverRuntimeMetric no longer available on EventHubTrigger

As shown in [this post](https://dylanm-asos.medium.com/azure-functions-event-hub-processing-8a3f39d2cd0f) with the previous version it was possible to inject a `PartitionContext` with runtime metrics populated into an Event Hub triggered function.

The only thing needed was to add a `PartitionContext` parameter to the function and a little bit of configuration in the `hosts.json`:

```csharp
public static async Task Run(
[EventHubTrigger("HubName",
Connection = "EventHubConnectionStringSettingName",
ConsumerGroup = "Consumer-Group-If-Applicable")]
EventData[] messageBatch,
PartitionContext partitionContext) {}
```

```json
{
"version": "2.0",
"extensions": {
"eventHubs": {
"eventProcessorOptions": {
"enableReceiverRuntimeMetric": true
}
}
}
}
```

I struggled to find a replacement for this in the new .NET isolated-process model. The only information I found was the following issue which shows how to add the partition context: https://github.com/Azure/azure-functions-dotnet-worker/issues/544

However, it does not include the runtime information of the partition. Is this somehow possible?