[Glitch] Fix scroll to top in single column UI

Port 2dee293c4c to glitch-soc

Signed-off-by: Thibaut Girka <thib@sitedethib.com>

app/javascript/flavours/glitch/features/community_timeline/index.js

@@ -105,7 +105,7 @@ class CommunityTimeline extends React.PureComponent {
     const pinned = !!columnId;
 
     return (
-      <Column ref={this.setRef} name='local' label={intl.formatMessage(messages.title)}>
+      <Column ref={this.setRef} name='local' bindToDocument={!multiColumn} label={intl.formatMessage(messages.title)}>
         <ColumnHeader
           icon='users'
           active={hasUnread}