FIX: select all button on group assigned page (#14523)

Button is not working properly because `updateAutoAddTopicsToBulkSelect` function is not available.

Meta: https://meta.discourse.org/t/select-all-in-group-assigned-doesnt-work/205270

app/assets/javascripts/discourse/app/components/topic-list.js

@@ -165,6 +165,10 @@ export default Component.extend(LoadMore, {
     );
   },
 
+  updateAutoAddTopicsToBulkSelect(newVal) {
+    this.set("autoAddTopicsToBulkSelect", newVal);
+  },
+
   click(e) {
     let self = this;
     let onClick = function (sel, callback) {