Fix issue where Safari 14 wouldn't always autofocus the preset list (close #8003)

modules/ui/preset_list.js

@@ -132,6 +132,12 @@ export function uiPresetList(context) {
 
         if (_autofocus) {
             search.node().focus();
+
+            // Safari 14 doesn't always like to focus immediately,
+            // so try again on the next pass
+            setTimeout(function() {
+                search.node().focus();
+            }, 0);
         }
 
         var listWrap = selection