Migrate to String::new()

src/pages/import.rs

@@ -329,7 +329,7 @@ impl ImportState {
             import_data: None,
             selected_index: 0,
             selected_property: None,
-            custom_property_name: "".to_string(),
+            custom_property_name: String::new(),
             skip_empty: true,
             separator: ", ".to_string(),
             progress: None,