GroupTimeline: use FormattedMessage

app/soapbox/features/group/group-timeline.tsx

@@ -70,7 +70,9 @@ const GroupTimeline: React.FC<IGroupTimeline> = (props) => {
               extra={(
                 <HStack alignItems='center' space={4}>
                   <label className='ml-auto cursor-pointer' htmlFor='group-timeline-visible'>
-                    <Text theme='muted'>Share with my followers</Text>
+                    <Text theme='muted'>
+                      <FormattedMessage id='compose_group.share_to_followers' defaultMessage='Share with my followers' />
+                    </Text>
                   </label>
                   <Toggle
                     id='group-timeline-visible'

app/soapbox/locales/en.json

@@ -443,6 +443,7 @@
   "compose_form.spoiler_placeholder": "Write your warning here (optional)",
   "compose_form.spoiler_remove": "Remove sensitive",
   "compose_form.spoiler_title": "Sensitive content",
+  "compose_group.share_to_followers": "Share with my followers",
   "confirmation_modal.cancel": "Cancel",
   "confirmations.admin.deactivate_user.confirm": "Deactivate @{name}",
   "confirmations.admin.deactivate_user.heading": "Deactivate @{acct}",