[INTERNAL] mdc.FilterUtils: call FilterConverter.createFilters only once 
[INTERNAL] mdc.FilterUtils: call FilterConverter.createFilters only once 

BCP: 2070368794

Change-Id: Ia1dfa7b8e03e7fe8a56d0751790b52562703fb63

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