jQuery either needs refactoring or dependencies added

Problem/Motivation

None of the field group javascript will execute in Drupal 10.3 onwards because jQuery is no longer part of core.

Steps to reproduce

Attempt to use any of the formatters, e.g. tabs in a custom theme and they are unlikely to work.

Proposed resolution

Either jquery_ui needs to be a dependency or the javascript needs refactoring to work independently of jQuery

Remaining tasks

- decide on refactoring vs jquery_ui dependencies
- do what has been decided
- merge