delete with virtual and grouping

[kendo-bot]

I'm submitting a...

• Bug report

Current behavior

The bug is related to calling multiple times the 'Create' action on Clicking 'Delete' button and could be reproduce in this REPL sample:

https://netcorerepl.telerik.com/mQujOQYt417xyujr37

Reproduction steps

1. The grid is configured to Virtual mode and add Groups.
2. Expand a group
3. Do NOT fetch all items in group, that's very Important!
4. Click 'Delete' button
   Result: I have debugged kendo code and found out that for each ''unfetched' row from the group, grid will take it as a 'new object' and will call 'Create' action for them.
   'Create' actions are not called in case the group is fetched to the end and so all items are loaded!