Update src/mcp/server/mcpserver/utilities/func_metadata.py

Co-authored-by: cubic-dev-ai[bot] <191113872+cubic-dev-ai[bot]@users.noreply.github.com>

Author: gingeekrishna

src/mcp/server/mcpserver/utilities/func_metadata.py

@@ -567,7 +567,7 @@ def _convert_to_content(result: Any) -> list[ContentBlock]:
                 for item in result  # type: ignore
             )
         )
-        if not items:
+        if not result:
             return [TextContent(type="text", text=json.dumps(list(result)))]
         return items