Issue with Closure in contentOptions for ExpandRowColumn starting from v3.2.9

[VladimirBarabash]

Prerequisites

• I have searched for similar issues in both open and closed tickets and cannot find a duplicate.
• The issue still exists against the latest master branch of yii2-grid.
• This is not an usage question. I confirm having gone through and read the documentation and demos.
• This is not a general programming / coding question. (Those should be directed to the webtips Q & A forum).
• I have attempted to find the simplest possible steps to reproduce the issue.
• I have included a failing test as a pull request (Optional).

Steps to reproduce the issue

1. Render kartik\grid\GridView with kartik\grid\ExpandRowColumn with Closure in contentOptions:

echo kartik\grid\GridView::widget([
    ...
    'columns' => [
        [
            'class' => 'kartik\grid\ExpandRowColumn',
            'value' => function ($model, $key, $index, $column) {
                return GridView::ROW_COLLAPSED;
            },
            'detailUrl' => Url::to(['/update']),
            'contentOptions' => function ($model, $key, $index, $widget) {
                return $model->isHighlighted ? ['class' => 'highlighted'] : [];
            },
        ],
        ...
    ],
]);

2. Open page in browser

Expected behavior and actual behavior

When I follow those steps, I see "Error. Cannot use object of type Closure as array":

I was expecting no error message, Closure in contentOptions working for ExpandRowColumn like in version 3.2.8

Environment

Browsers

• Google Chrome
• Mozilla Firefox
• Internet Explorer
• Safari

Operating System

• Windows
• Mac OS X
• Linux
• Mobile

Libraries

• jQuery version: 2.2.4
• yii2-grid version: 3.2.9, 3.3.0, 3.3.1, 3.3.2, 3.3.3, 3.3.4, 3.3.5, dev-master

Isolating the problem

• This bug happens on the demos page
• The bug happens consistently across all tested browsers
• This bug happens when using yii2-grid without other plugins.

There is no bug in version 3.2.8. There is bug in versions 3.2.9-3.3.5, dev-master