Add const references detected by clang-tidy

editor/localization_editor.cpp

@@ -545,7 +545,7 @@ void LocalizationEditor::update_translations() {
 
 				PackedStringArray selected = remaps[keys[i]];
 				for (int j = 0; j < selected.size(); j++) {
-					String s2 = selected[j];
+					const String &s2 = selected[j];
 					int qp = s2.rfind(":");
 					String path = s2.substr(0, qp);
 					String locale = s2.substr(qp + 1, s2.length());