fix typecheck by locking superjson

Author: ericallam

packages/core/package.json

@@ -193,7 +193,7 @@
     "socket.io": "4.7.4",
     "socket.io-client": "4.7.5",
     "std-env": "~3.8.1",
-    "superjson": "~2.2.1",
+    "superjson": "2.2.1",
     "tinyexec": "~0.3.2",
     "uncrypto": "~0.1.3",
     "zod": "3.25.76",