Bug report
DropDownTree as a row editor does not clear chips when x button is clicked. Select All option does not select items

this.dataSource.data()  does not have items

Regression with 2022.1.119

Reproduction of the problem
Open this Dojo example - https://dojo.telerik.com/oXizEQac

Open Name column row filter DropDownTree

Select All shall select all items. Clearing items shall clear them

Environment
Kendo UI version: 2022.1.119 or newer
Browser: [all]