Plugin - Accommodate new oneclick exclusions UI for delayjs

[jeawhanlee]

Is your feature request related to a problem? Please describe.
Accommodate the new structure from the backend exclusion lists to fit the new UI.
Parent issue

Describe the solution you'd like
Update the UI to fit new changes.

Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.

Additional context
Add any other context or screenshots about the feature request here.

[jeawhanlee]

Scope a solution ✅

In WP_Rocket\Engine\Optimization\DelayJS\Admin\SiteList::prepare_delayjs_ui_list

• Update this array to add the new categories described here
• Update the same array to use new Category headings ( 3rd parties for scripts & WordPress for themes and plugins )
• Update each subcategory head to display a counter that shows the number of active exclusions.

In views/settings/fields/categorized_multiselect.php

• Move this to this list, might need to update this part of this script
• Add new css rule to override style for wpr-field to make divider short
• Update this to allow for clicking on the subcategory title to toggle list.

In WP_Rocket\Engine\Admin\Settings

• Update wording here to the proposal here

Add tests.

Estimate the effort ✅

[S]

[Miraeld]

LGTM