chore: remove type module

Author: ycjcl868

package.json

@@ -6,7 +6,6 @@
   "author": "Anthropic, PBC (https://anthropic.com)",
   "homepage": "https://modelcontextprotocol.io",
   "bugs": "https://github.com/modelcontextprotocol/typescript-sdk/issues",
-  "type": "module",
   "repository": {
     "type": "git",
     "url": "git+https://github.com/modelcontextprotocol/typescript-sdk.git"