[FIX] sap.ui.table.ColumnMenu: Fixes issue with setValue on customFilterButton
[FIX] sap.ui.table.ColumnMenu: Fixes issue with setValue on customFilterButton

 - fixes that setValue was called on a menu button when the table was set to
 enableCustomFilter(true)

 BCP: 1570791991

Change-Id: I4c07c34e17759175ca892ea4e500550a7a994b9e

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