Describe the bug
Combobox does not scroll to focused item

To Reproduce
https://stackblitz.com/edit/u4crwa?file=src%2Fmain.vue

Type v

Expected behavior
Volleyball is scrolled into view

Describe the bug
Custom value not persisted on blur when using value-primitive

To Reproduce
Steps to reproduce the behavior:

If possible, share a runnable snippet on StackBlitz by following the steps below:

1. Find an example in[ the documentation that looks similar to your case](https://stackblitz.com/edit/6kttks-xjfsfu?file=src%2Fmain.vue).
2. focus the Combobox
3. type some custom texts and click away to blur it
4. Current: the custom typed text is cleared

Expected behavior
The custom typed value persists

The Vue native ComboBox and Autocomplete do not support the value-render prop and slot, so a selected value cannot have a custom display. The DropDownList does however - they should all be consistent in this.

DropDownList reference:
https://www.telerik.com/kendo-vue-ui/components/dropdowns/dropdownlist/custom-rendering/#toc-values

Any chance we'll be getting a Vue native version of the MultiColumnComboBox?  This is a very useful control :)