[FIX] sap.ui.unified.DateRange return instance to allow method chaining
[FIX] sap.ui.unified.DateRange return instance to allow method chaining

Change-Id: I38b5ba199e4554138ec16dbc394240b5a075f290

cschuff/openui5,SQCLabs/openui5,cschuff/openui5,nzamani/openui5,SAP/openui5,SAP/openui5,olirogers/openui5,olirogers/openui5,SAP/openui5,olirogers/openui5,nzamani/openui5,nzamani/openui5,SQCLabs/openui5,SQCLabs/openui5,cschuff/openui5,SAP/openui5