[QUERY] Getting Delivery Properties of Event subscription From Azure Function

# Issue Transfer

This issue has been transferred from the Azure SDK for .NET repository, [#45471](https://github.com/Azure/azure-sdk-for-net/issues/45471).

### Please be aware that @Baxom is the author of the original issue and include them for any questions or replies.

## Details
### Library name and version

Microsoft.Azure.Functions.Worker.Extensions.EventGrid 3.4.1

### Query/Question

Hello,

I'm trying to deliver only one Azure Function to listen multiple Blobs. For this I choose to publish events when something happens on my storage to an event grid.

Then I have a function (isolated) which is triggered by the [EventGridTrigger].

All works well, nevertheless, I am not able to retrieve the headers I've added in the "delivery properties" of my event subscription.


I am only able to inject a CloudEvent, and the FunctionContext which doesn't carries anything interesting.

Is it possible ?

Thanks

### Environment

_No response_