Hi, there is a problem with filter filter popups in Data Grid.

Steps to reproduce:

1. Go to https://www.telerik.com/kendo-react-ui/components/grid/filtering

2. Open the date filter popup  in the "FirstOrderOn" Column and click on any date

3. Open and close the filter combo in "Disconinued" column couple of times. 

Actual Behavior
On version 9.1.0 besides Opening the "Disconinued" filter combo, the date popup also openes. On version 8.5.0 seems to work fine

Expected Behavior
Only the popup from "Discontinued" column should be Opened / Closed