Bug report

The Start Event of a Sortable component is mapping to the "handler" configuration instead of the proper "start" event

Reproduction of the problem

REPL: https://netcorerepl.telerik.com/wIYLYnld333JlP3t08

Current behavior

The Start Event is mapped to the "handler" configuration

Expected/desired behavior

The Start Event to be mapped to the proper "start" event

TicketID: 1673355