Dialog modal overlay is being animated

[ag-petrov]

Bug report

With the current version the modal overlay of the dialog is also animated. While only the dialog container should be.

Reproduction of the problem

Run this dojo and click the button - https://dojo.telerik.com/uqEcusiY

Current behavior

Overlay is animated

Expected/desired behavior

Overlay should not be animated.