Pull request for #45362

Summary of Changes

In a fancy-select filter such as the list of categories in the article manager the dropdown excludes the currently selected category.

This causes problems if that category has any subcategories as they now appear to be the children of a completely different category

This is caused by the choices.js script which by default removes selected items from the list which is fine for a flat list but causes the described problem on a nested list.

The solution is documented here https://github.com/Choices-js/Choices?tab=readme-ov-file#renderselectedchoices

Usage: Whether selected choices should be removed from the list. By default choices are removed when they are selected in multiple select box. To always render choices pass always.

This PR changes the setting from auto to always

Testing Instructions

Create two categories
Create subcategories for both of the above
Using the category filter select one of the parent categories
Now try to select one of the child categories

As this is a JS change you will need to test either a prebuilt package or npm run build:js

Actual result BEFORE applying this Pull Request

The previously selected category is removed from the list

No category selected

Category selected

Expected result AFTER applying this Pull Request

The categories in the list never changes

No category selected

Category selected

Link to documentations

Please select:

• Documentation link for docs.joomla.org:

• No documentation changes for docs.joomla.org needed

• Pull Request link for manual.joomla.org:

• No documentation changes for manual.joomla.org needed

cc @laoneo