Fields with Client-side Hierarchical Select widgets do not work

Problem/Motivation

When a field has Client-side Hierarchical Select as its chosen widget in default form mode, the field does not appear in the Bulk Update Content form.

Steps to reproduce

- Create a node with an entity reference field
- Under manage form display, choose "Client-side hierarchical select"
- Create a view to display the nodes and add a VBO field with action Bulk Update Content Fields
- While on the view page, attempt to Bulk update the entity reference field
- The form will render without the field

Proposed resolution

Check if the value of current widget contains the substring "cshs".

If it does, set up an entity autocomplete form element with settings based on the field definition. Specify the target type, title, default value, and selection settings.