Messages.Item.SendRequestBuilder.ToPostRequestInformation() does not work in batch.

Describe the bug

Including following post request information into batch

var sendDraftRequest = _graphClient.Me.Messages[messageId].Send.ToPostRequestInformation();

returns the following error inside batch:

{"error":{"code":"BadRequest","message":"Write request id : f4f09b02-155a-47e7-86da-a89930ad6590 does not contain Content-Type header or body.","innerError":{"date":"2024-08-19T01:08:18","request-id":"7d3af893-af46-4dc4-9dbb-c4edd72dcd92","client-request-id":"31088810-bb70-466a-895c-925e315ef7a8"}}}

This documentation states that body is not required.

I extracted this error from the BatchResponseContentCollection itself in the debugger, because none of the APIs provided returns a response for the actual request.

BatchResponseContentCollection.GetResponseByIdAsync does not return any responses for the error even though the collection itself have the proper ids:

1. Confirming requestId

2.1. Confirming that response exists

2.2 Confirming that key that associated with the response exists

3. Confirming that response is not returned by proper id

Expected behavior

If no error, POST request is executed inside batch.
If error, return the request error with BatchResponseContentCollection.GetResponseByIdAsync

How to reproduce

Just include _graphClient.Me.Messages[messageId].Send.ToPostRequestInformation() request information inside a batch using AddBatchRequestStepAsync

SDK Version

5.56.0

Latest version known to work for scenario above?

No response

Known Workarounds

No response

Start by reproducing the batch request using AddBatchRequestStepAsync with Messages.Item.SendRequestBuilder.ToPostRequestInformation(). Inspect the batch handling around that request and BatchResponseContentCollection.GetResponseByIdAsync. Done means the POST executes in a batch or its error is returned by the response lookup.