use node: prefix for requires

mostly because code is being autogenerated by all the AI stuff using
this prefix. it's also used in the stack trace.

src/addonconfigs.js

@@ -11,7 +11,7 @@ exports = module.exports =  {
     getAppIdByValue,
 };
 
-const assert = require('assert'),
+const assert = require('node:assert'),
     database = require('./database.js');
 
 async function set(appId, addonId, env) {