Global CommonJS data files in Node 23 do not load their data

[vrugtehagel]

Eleventy

3.0.0

Describe the bug

When using CommonJS syntax in Node 23, global data files are not loaded properly and results in the data being unavailable throughout the build.

This is because Module objects for modules using module.exports now contain two keys, 'default' and 'module.exports', and Eleventy specifically checks if there is only one before accessing the default property. Then it goes on to make sure the keys from 'default' and those in the top level are the same, which fails on the 'module.exports' key.