Delayed JS doesn’t trigger DOMContentLoaded event #165

Steps to Reproduce:

Load foo-bar.js

foo-bar.js contains:

document.addEventListener('DOMContentLoaded', function() {
  console.log('foo bar');
});

Expected Behavior:
console.log('foo bar') should run when the script executes.

Actual Behavior:
Because of how delayed JavaScript works, the DOMContentLoaded event doesn’t fire automatically. As a result, the callback never runs.

Suggested Solution:
Trigger the DOMContentLoaded event manually to ensure the JS code runs properly.