Allows to disable automatic sorting and use server ordered values

Problem/Motivation

It is useful to render server-provided order of elements in some cases.
E.g. when site admins edited specific terms and sorted them using UI.

Steps to reproduce

1. Create vocabulary.
2. Add elements .
3. Sort them.
4. Add a field to some node and try selectize in the form to show it.
5. See that output is different from the taxonomy UI sorted.

Proposed resolution

1. Add a new option to the widget settings - Skip sorting and use a server order.
2. Adjust JS and implement based on the setting https://github.com/selectize/selectize.js/discussions/1706#discussioncom...

I'll prepare patch or MR soon.