(Layer) Correctly set clipping via properties
(Layer) Correctly set clipping via properties

[Problem]  Setting clipping via properties was not working
[Cause]    Only setting the variables on the event side, nothing being sent to the Update thread
[Solution] Call the method that sends the message rather than setting the values directly

Change-Id: I53d75db77d04b66cd93f8389fafab660514d02cf

pwisbey/dali-core,pwisbey/dali-core,pwisbey/dali-core,dalihub/dali-core,dalihub/dali-core,dalihub/dali-core,pwisbey/dali-core,dalihub/dali-core