[INTERNAL][FIX] ObjectPageSection: fixed first section sscrolling
[INTERNAL][FIX] ObjectPageSection: fixed first section sscrolling

-fixed scrolling to top of first section on tab key
-scrolling now happens only on tabbing to the section control

Change-Id: I5fcdf661de0826cd8eaab6b660a45a351c69ce98

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