fix: tighten MCPServer tool result typing#2881

sarvesh1327 wants to merge 4 commits into

modelcontextprotocol:mainmodelcontextprotocol/python-sdk:mainfrom

sarvesh1327:fix/mcpserver-call-tool-result-typesarvesh1327/python-sdk:fix/mcpserver-call-tool-result-typeCopy head branch name to clipboard