Aiobotocore invalid timings

## **Description of the bug**
The Elastic APM agent reports incorrect timing for operations involving aiobotocore. Because aiobotocore performs asynchronous I/O using boto3, the measured span duration reflects only a small part (1–2 seconds) of the actual time required to download a file. As a result, the reported duration is significantly shorter than the true elapsed time.

## **To Reproduce**
1. Set up Elastic APM agent in a project using aioboto3 or aiobotocore.
2. Upload a large file (e.g. >50 MB) and download it from code using `await s3_client.get_object(...)` (you also need to read the response) or similar.
3. Observe the reported span duration in the APM dashboard (e.g. Kibana).
4. Compare it with the actual download time measured independently (e.g. `await` + `time.perf_counter_ns()`).

## **Environment**
- OS: Linux
- Python version: 3.12
- Framework and version: FastAPI 0.115.14
- APM Server version: N/A
- Agent version: 6.22.3

Inizia riproducendo il problema tramite l’entry point `await s3_client.get_object(...)` e leggendo la risposta, quindi confronta lo span riportato con il tempo trascorso misurato usando `await` e `time.perf_counter_ns()`. L’issue non indica file o test del repository; il lavoro è completato quando la durata dello span copre l’effettivo download del file anziché solo l’operazione iniziale.

Scritto dal modello di indicizzazione a partire dal testo della issue.