gate notification settings (#8527)

src/lib/statsig/gates.ts

···
   | 'old_postonboarding'
   | 'onboarding_add_video_feed'
   | 'post_threads_v2_unspecced'
+  | 'reengagement_features'
   | 'remove_show_latest_button'
   | 'test_gate_1'
   | 'test_gate_2'

src/screens/Settings/NotificationSettings/components/PreferenceControls.tsx

···
 import {msg, Trans} from '@lingui/macro'
 import {useLingui} from '@lingui/react'
 
+import {useGate} from '#/lib/statsig/statsig'
 import {useNotificationSettingsUpdateMutation} from '#/state/queries/notifications/settings'
 import {atoms as a, platform, useTheme} from '#/alf'
 import * as Toggle from '#/components/forms/Toggle'
···
   preference?: AppBskyNotificationDefs.Preference | FilterablePreference
   allowDisableInApp?: boolean
 }) {
+  const gate = useGate()
+
+  if (!gate('reengagement_features')) return null
+
   if (!preference)
     return (
       <View style={[a.w_full, a.pt_5xl, a.align_center]}>

src/screens/Settings/Settings.tsx

···
   type CommonNavigatorParams,
   type NavigationProp,
 } from '#/lib/routes/types'
+import {useGate} from '#/lib/statsig/statsig'
 import {sanitizeDisplayName} from '#/lib/strings/display-names'
 import {sanitizeHandle} from '#/lib/strings/handles'
 import {useProfileShadow} from '#/state/cache/profile-shadow'
···
   const {pendingDid, onPressSwitchAccount} = useAccountSwitcher()
   const [showAccounts, setShowAccounts] = useState(false)
   const [showDevOptions, setShowDevOptions] = useState(false)
+  const gate = useGate()
 
   return (
     <Layout.Screen>
···
               <Trans>Moderation</Trans>
             </SettingsList.ItemText>
           </SettingsList.LinkItem>
-          <SettingsList.LinkItem
-            to="/settings/notifications"
-            label={_(msg`Notifications`)}>
-            <SettingsList.ItemIcon icon={NotificationIcon} />
-            <SettingsList.ItemText>
-              <Trans>Notifications</Trans>
-            </SettingsList.ItemText>
-          </SettingsList.LinkItem>
+          {gate('reengagement_features') && (
+            <SettingsList.LinkItem
+              to="/settings/notifications"
+              label={_(msg`Notifications`)}>
+              <SettingsList.ItemIcon icon={NotificationIcon} />
+              <SettingsList.ItemText>
+                <Trans>Notifications</Trans>
+              </SettingsList.ItemText>
+            </SettingsList.LinkItem>
+          )}
           <SettingsList.LinkItem
             to="/settings/content-and-media"
             label={_(msg`Content and media`)}>