Is this a new feature, an improvement, or a change to existing functionality?

New Feature

How would you describe the priority of this feature request

Medium

Please provide a clear description of problem this feature solves

The latest MCP 2025-03-26 spec introduced a new protocol Streamable HTTP transport. But current MCPBuilder class based on MCPSSEClient and doesn't support this protocol.

Describe your ideal solution

• Improve src/aiq/tool/mcp/mcp_client.py implementation.
• Increase mcp package version from 1.0.0 to 1.9.2.

Additional context

No response

Code of Conduct

• I agree to follow this project's Code of Conduct
• I have searched the open feature requests and have found no duplicates for this feature request