[Bug][DropdownTree] Selecting a custom-rendered item throw an error

[silviyaboteva]

Describe the bug

Selecting a custom-rendered item via value-render throws an error in StackBlitz and CodeSandbox.

To Reproduce

Steps to reproduce the behavior:

1. Navigate to this example.
2. Open it in StackBlitz by using the OPEN IN STACKBLITZ button.
3. Open the popup and expand "Kendo UI for Vue Project" item. Then select about.html.
4. The popup closes and selected value shows on the DropdownTree. Try to open it once again.
5. In the console, there is an error.

Additionally, the example opened in CodeSandbox throws the following error and breaks the application

Expected behavior
Selected custom-rendered values working without errors.

Additional context
Last working version: 3.14.2
In v4.1.0, there is a 'Module not found error'
In v4.2.0, the error is reproducible

Related public item
https://feedback.telerik.com/kendo-vue-ui/1675304-bug-dropdowntree-dropdowntree-throws-an-error-when-opens-dropdown-menu