[frontend] set dynamicMappingColumn for each new column

opencti-platform/opencti-front/src/private/components/data/csvMapper/representations/CsvMapperConditionalEntityMapping.tsx

@@ -30,7 +30,7 @@ CsvMapperConditionalEntityMappingProps
 
   const handleColumnSelect = async (column: string | null) => {
     await setFieldValue(`${representationName}.column_based.column_reference`, column);
-    if (!dynamicMappingColumn && column) {
+    if (column) {
       setDynamicMappingColumn(column);
     }
   };