### Check for existing issues

- [x] I have searched the existing issues and checked that my issue is not a duplicate.

### What happened?

Azure Data Collection Rule HTTP endpoint has a max limit of 1MB (raw or uncompressed), requests larger than this fail. Additionally, and field that is over 256KB is truncated, so there is no reason to try and send data larger than this

### Steps to Reproduce

1. Enable Azure sentinel logging 2. Create request with messages >1MB 3. It will not be logged in Azure, error will be in the LiteLLM logs

### Relevant log output

```shell litellm-5f7c87bccb-dsdg2 response = await self.async_httpx_client.post( ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ url=self.api_endpoint, data=body.encode("utf-8"), headers=headers ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ) …