Auto-expand follow suggestions on web (#3432)

src/lib/statsig/statsig.tsx

···
   return {
     userID,
     platform: Platform.OS,
+    custom: {
+      // Need to specify here too for gating.
+      platform: Platform.OS,
+    },
   }
 }
 

src/screens/Profile/Header/ProfileHeaderStandard.tsx

···
 import {msg, Trans} from '@lingui/macro'
 import {useLingui} from '@lingui/react'
 
+import {useGate} from '#/lib/statsig/statsig'
 import {logger} from '#/logger'
+import {isWeb} from '#/platform/detection'
 import {Shadow} from '#/state/cache/types'
 import {useModalControls} from '#/state/modals'
 import {
···
     })
   }, [track, openModal, profile])
 
+  const autoExpandSuggestionsOnProfileFollow = useGate(
+    'autoexpand_suggestions_on_profile_follow',
+  )
   const onPressFollow = () => {
     requireAuth(async () => {
       try {
···
             )}`,
           ),
         )
+        if (isWeb && autoExpandSuggestionsOnProfileFollow) {
+          setShowSuggestedFollows(true)
+        }
       } catch (e: any) {
         if (e?.name !== 'AbortError') {
           logger.error('Failed to follow', {message: String(e)})