Support event delivery while using 'trigger'

```javascript
$(document).on("contextmenu", selector, function (e, ext) {
e.preventDefault();
e.stopPropagation();
if (!e.pageX && ext && ext.event) {
// trigger
e = ext.event;
}
// ...
}
```

The issue only provides a JavaScript contextmenu handler snippet; start by locating that delegated handler and tracing the trigger path that uses ext.event. Define the expected event-delivery behavior for triggered calls, then verify it with a focused regression test; the issue does not name a test file or completion wording.

Written by the indexing model from the issue text.