Update Automator Disable option for Worker: Field Widget

Problem/Motivation

With ✨ Adding Disable Option for AI Automators Active , it is now possible to disable automators that use the Automator Worker: Direct option.

• When an automator ise disabled in the UI at admin/structure/types/manage/page/automator_chain, saving the node does NOT trigger a call to the LLM;
• When an automator is enabled in the same UI, saving the node triggers the automator i.e. a call is made to the LLM;

But the resulting UX when using the new Automator Worker: Field Widget option is less than ideal and somewhat confusing.

Proposed resolution

The present issue aims to improve this.

Suggestion: maybe by disabling the field widget action button in the edit form i.e. display it greyed-out and un-clickable. A disabled button might be better UX since it informs the user/editor that the automator is configured but disabled.