fix(server): allow tools with outputSchema to surface errors via unstructured content#2447

SAY-5 wants to merge 2 commits intomodelcontextprotocol:v1.xmodelcontextprotocol/python-sdk:v1.xfrom

SAY-5:fix/lowlevel-tool-error-with-outputschemaSAY-5/python-sdk:fix/lowlevel-tool-error-with-outputschemaCopy head branch name to clipboard