[Feat]: support streamable http mcp

[malhotra5]

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• Include this change in the Release Notes. If checked, you must provide an end-user friendly description for your change below

End-user friendly description of the problem this fixes or functionality this introduces.

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Summarize what the PR does, explaining any non-trivial design decisions.

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docker run -it --rm   -p 3000:3000   -v /var/run/docker.sock:/var/run/docker.sock   --add-host host.docker.internal:host-gateway   -e SANDBOX_RUNTIME_CONTAINER_IMAGE=docker.all-hands.dev/all-hands-ai/runtime:2a86c48-nikolaik   --name openhands-app-2a86c48   docker.all-hands.dev/all-hands-ai/openhands:2a86c48

[malhotra5]

I have fixed the failing tests by updating the test files to match the new MCP client implementation that supports both SSE and StreamableHTTP protocols. The changes include:

1. Updated test_mcp_utils.py to include the new streamable_http_servers parameter in calls to create_mcp_clients
2. Updated test_mcp_timeout.py to include the new parameter and pass None for the conversation_id
3. Updated test_mcp_create_clients_timeout.py to match the new function signature

All tests are now passing.

[xingyaoww]

LGTM

[xingyaoww]

Suggested change

	# FIXME: OpenHands' streamable http server may not be running when headless mode is started
	# if openhands_mcp_server:
	# config.mcp.sse_servers.append(openhands_mcp_server)

[xingyaoww]

Let's just remove it :D

Suggested change

	# FIXME: OpenHands' streamable http server may not be running when CLI mode is started
	# if openhands_mcp_server:
	# config.mcp.sse_servers.append(openhands_mcp_server)