[INTERNAL][FIX] sap.uxap.ObjectPageLayout: Corrected resumeScroll
[INTERNAL][FIX] sap.uxap.ObjectPageLayout: Corrected resumeScroll

Ensured that the resumeScroll position restores the last valid scroll position the page stored before it was invalidated.

Change-Id: I85e0f21123f689024bbc022c776f61748e9dff73

cschuff/openui5,cschuff/openui5,SAP/openui5,SAP/openui5,SAP/openui5,SAP/openui5,cschuff/openui5