Suppress "WARNING: Invalid HTTP request received." warning

The following log may be recorded in the Application log output to CloudWatch Logs when the AgentCore runtime starts up.
When recorded during initialization after deployment, this is a message that does not affect the application. However, this could confuse users, so I would like to suppress it.

For example, you can confirm this log message by adding a lifespan to [strands_claude.py](https://github.com/awslabs/amazon-bedrock-agentcore-samples/blob/f50712e3474939965cff165a8cb60980b1d636d9/01-tutorials/01-AgentCore-runtime/01-hosting-agent/01-strands-with-bedrock-model/runtime_with_strands_and_bedrock_models.ipynb) as follows:

```
from contextlib import asynccontextmanager
from typing import AsyncGenerator

from strands import Agent, tool
from strands_tools import calculator # Import the calculator tool
import argparse
import json
from bedrock_agentcore.runtime import BedrockAgentCoreApp
from strands.models import BedrockModel

@asynccontextmanager
async def lifespan(_app: BedrockAgentCoreApp) -> AsyncGenerator[None, None]:
"""Completely empty lifespan context manager for testing."""
yield
app = BedrockAgentCoreApp(lifespan=lifespan)

# Create a custom tool
@tool
def weather():
""" Get weather """ # Dummy implementation
return "sunny"
(snip)
```

Comience con la ruta de inicio del runtime y reproduzca la advertencia usando el ejemplo de lifespan en 01-tutorials/01-AgentCore-runtime/01-hosting-agent/01-strands-with-bedrock-model/runtime_with_strands_and_bedrock_models.ipynb. Rastree dónde se emite "WARNING: Invalid HTTP request received." y verifique que la inicialización ya no registre este mensaje inofensivo, mientras que los logs de la aplicación no se vean afectados.

Escrito por el modelo de indexación a partir del texto del issue.