The legacy M.core.event.FILTER_CONTENT_UPDATED event has been replaced with a
new core_filter/events::filterContentUpdated native DOM event.

The new event can be triggered using the `notifyFilterContentUpdated`
function, and by providing with an Array containing the HTMLElements
that were updated, for example:

```
import {notifyFilterContentUpdated} from 'core_filter/events';

const someHandler = e => {
    // ...
    const nodeList = Array.from(document.querySelectorAll('div'));
    notifyFilterContentUpdated(nodeList);
};
```

The new event can be listened to at any point in the DOM using the
following syntax:

```
import {eventTypes} from 'core_filter/events';

const handler = e => {
    // The list of HTMLElements in an Array.
    e.detail.nodes;
};

document.addEventListener(eventTypes.filterContentUpdated, handler);
```

A backward-compatabibility layer is included to ensure that any legacy
YUI event listener, or jQuery event listener are still called with the
same arguments.

This legacy bridges will be removed after Moodle 4.3.