Refresh behavior form on optionset change

Problem/Motivation

In behavior form, we have an optionset field that allows setting optionset entities for gridstack configurations.

Depending on chosen optionset the gristack libraries, options, templates, and other settings could differ.

Proposed resolution

Implement form AJAX refresh to update the form elements after the optionset change.

It could be difficult due to the limitation/specification of the behavior form.

Remaining tasks

1) Investigate and update the task details.
...
n) Implement AJAX refresh for the behavior form.