[Glitch] Profile redesign: Ensure boost and languages menu items are only for following

Port 5ba5a2e552 to glitch-soc

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

app/javascript/flavours/glitch/features/account_timeline/components/menu.tsx

@@ -623,7 +623,7 @@ function redesignMenuItems({
   );
 
   // Timeline options
-  if (relationship && !relationship.muting) {
+  if (relationship?.following && !relationship.muting) {
     items.push(
       {
         text: intl.formatMessage(