[INTERNAL][FIX] sap.uxap.ObjectPageHeader image placeholder fixed
[INTERNAL][FIX] sap.uxap.ObjectPageHeader image placeholder fixed

BCP: 1670366099
-fixed placeholder to be shown in content when ImageURI is not found

Change-Id: Ic328478b4360fc71a7fa4089efc42a900b5d5deb

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