[Glitch] Fix tag rendering error in hashtag column settings

Port e65080181a to glitch-soc

Signed-off-by: Claire <claire.github-309c@sitedethib.com>

app/javascript/flavours/glitch/features/hashtag_timeline/components/column_settings.js

@@ -33,8 +33,8 @@ class ColumnSettings extends React.PureComponent {
   tags (mode) {
     let tags = this.props.settings.getIn(['tags', mode]) || [];
 
-    if (tags.toJSON) {
-      return tags.toJSON();
+    if (tags.toJS) {
+      return tags.toJS();
     } else {
       return tags;
     }