fix: address issue with improper server start failure handling

[hashemix]

📌 Summary

This PR address issue with improper server start failure handling, for instance when server does not support the mcp protocol version that client is requesting.

🔍 Related Issues

• Partially addresses Unable to run the hello-world-mcp-server example #69

✨ Changes Made

• Updated ServerHandler to call set_client_details only after ensuring protocol version compatibility, preventing incorrect initialization to true.
• Updated ServerRuntime to exit early upon detecting an incompatible version, enabling process termination and graceful shutdown.
• Implemented a rpc_error_message() method for McpSdkError, to help extracting the message from RpcError error types
• Updated mcp server examples to output proper message when server initialization fails :