Fix compilation error in test

crates/milli/src/update/test_settings.rs

@@ -897,6 +897,7 @@ fn test_correct_settings_init() {
                 prefix_search,
                 facet_search,
                 disable_on_numbers,
+                chat,
             } = settings;
             assert!(matches!(searchable_fields, Setting::NotSet));
             assert!(matches!(displayed_fields, Setting::NotSet));