fix(nx-payload): add type module package.json to generated app

Author: hakalb

packages/nx-payload/README.md

@@ -316,6 +316,8 @@ The types can be distributed to the client developer manually or saved to a shar
 > nx payload [app-name] generate:types
 > nx payload-graphql [app-name] generate:schema
 > ```
+>
+> The generated app includes a `package.json` with `"type": "module"` to ensure the Payload config loads as ESM when running CLI targets on Node ≥ 20.11. If your workspace root `package.json` already has `"type": "module"`, this file is redundant but harmless.
 
 ### Troubleshooting
 

packages/nx-payload/src/generators/application/files/package.json__tmpl__

@@ -0,0 +1,3 @@
+{
+  "type": "module"
+}