Split into utilDisplayName / utilDisplayNameForPath

This is because utilDisplayName gets called a bunch of places and we
only want to add the Arabic reversal code for textpath labels

modules/util/index.js

@@ -3,6 +3,7 @@ export { utilEntitySelector } from './util';
 export { utilEntityOrMemberSelector } from './util';
 export { utilGetAllNodes } from './util';
 export { utilDisplayName } from './util';
+export { utilDisplayNameForPath } from './util';
 export { utilDisplayType } from './util';
 export { utilStringQs } from './util';
 export { utilQsString } from './util';

modules/util/svg_paths_arabic_fix.js

@@ -1,3 +1,6 @@
+// see https://github.com/openstreetmap/iD/pull/3707
+// https://gist.github.com/mapmeld/556b09ddec07a2044c76e1ef45f01c60
+
 var chars = {
     // madda above alef
     1570: { initial: 'آ‎', isolated: 'ﺁ', medial: 'ﺁ', final: 'ﺂ' },

modules/util/util.js

@@ -69,9 +69,16 @@ export function utilDisplayName(entity) {
         }
     }
 
+    return name;
+}
+
+
+export function utilDisplayNameForPath(entity) {
+    var name = utilDisplayName(entity);
     var isFirefox = utilDetect().browser.toLowerCase().indexOf('firefox') > -1;
     var arabicRegex = /[\u0600-\u06FF]/g;
-    if (!isFirefox && name && (entity.tags.highway || entity.tags.railway) && arabicRegex.test(name)) {
+
+    if (!isFirefox && name && arabicRegex.test(name)) {
         name = fixArabicScriptTextForSvg(name);
     }