Use node prefix for build-in modules (#3340)

It is basically a cosmetic thing, but has the following advantages:

1. Consistency with the official node documentation. The prefix is used
there.
2. It is easier to recognize the build-in modules.

modules/default/calendar/calendarfetcherutils.js

@@ -8,7 +8,7 @@
 /**
  * @external Moment
  */
-const path = require("path");
+const path = require("node:path");
 const moment = require("moment");
 
 const zoneTable = require(path.join(__dirname, "windowsZones.json"));