Bug report

When PanelBar is configured with tag helpers selected="true" is not applied and the item is not rendered as selected.

Reproduction of the problem

1. Create an UI for ASP.NET Core application and use configuration as in the example below:

<kendo-panelbar name="panelbar">
    <items>
        <panelbar-item text="Item 1" selected="true">
        </panelbar-item>
        <panelbar-item text="Item 2">                    
        </panelbar-item>
    </items>
</kendo-panelbar>

Current behavior

The 'Item 1' is not marked as selected.

Expected/desired behavior

The item should be marked as selected when the PanelBar widget is loaded.

Environment

• Kendo UI version: 2021.1.330
• Browser: [all ]