[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/keyboard_shortcuts/index.js

@@ -25,10 +25,10 @@ class KeyboardShortcuts extends ImmutablePureComponent {
   };
 
   render () {
-    const { intl, collapseEnabled } = this.props;
+    const { intl, collapseEnabled, multiColumn } = this.props;
 
     return (
-      <Column icon='question' heading={intl.formatMessage(messages.heading)}>
+      <Column bindToDocument={!multiColumn} icon='question' heading={intl.formatMessage(messages.heading)}>
         <ColumnBackButtonSlim />
         <div className='keyboard-shortcuts scrollable optionally-scrollable'>
           <table>