[INTERNAL][FIX] P13nConditionPanel: handling of wrong keyField handling fixed
[INTERNAL][FIX] P13nConditionPanel: handling of wrong keyField handling
fixed

a wrong entry in the keyfield combobox will disable all other fields of
the condition.

Change-Id: I4c9f304c41f271af97793ed2bf4fd7dc8da46a36

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