fix empty value if value is 0 (#3403)

Signed-off-by: Etienne LESOT <[email protected]>

Author: EtienneLt

src/components/dialogs/network-modifications/by-filter/by-assignment/modification-by-assignment-dialog.tsx

@@ -86,9 +86,7 @@ const ModificationByAssignmentDialog: FC<any> = ({
                     const field = FieldType[fieldKey];
                     const value = assignment[VALUE_FIELD];
                     let valueConverted = convertInputValue(field, value);
-                    if (!valueConverted || valueConverted === '') {
-                        valueConverted = emptyValueStr;
-                    }
+                    valueConverted = valueConverted !== 0 && !valueConverted ? emptyValueStr : valueConverted;
                     return {
                         ...assignment,
                         [VALUE_FIELD]: valueConverted,