[INTERNAL][FIX] sap.m.PagingButton: Test page adjusted
[INTERNAL][FIX] sap.m.PagingButton: Test page adjusted

There were labels referencing the inputs on the page already,
but their labelFor property wasn't set. This fix adds them.

Change-Id: I0a86080f3502c54f21250c3520065b9be29934af
BCP: 1770617460

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