Undefined variable: hiddenFieldsets in field layout

[asika32764]

Steps to reproduce the issue

Create a component and add this code to edit layout:

<?php $this->set('show_options', 0) ?>
<?php echo JLayoutHelper::render('joomla.edit.params', $this); ?>

Expected result

No error and show edit page.

Actual result

Get this error message:

System information (as much as possible)

3.7.2

Additional comments

I'm not sure what is the usage of this variable so I didn't create PR to fix it.

[zero-24]

PR is: #16856 please test