Add follow button to feed item avatar (#3560)

* add follow button to feed item avatar

* remove confirmation

* add confirmation (just system alert)

* Shrink the avi follow indicator a smidge

* gate the follow button

* remove from your own posts

* add to post thread item

* hide the follow button locally to component

* Use native dropdown

* Add follow btn to notifications and search

* UI tweaks

* Hide on PWI

* Add toast for confirmation

* Check gate last

* compiler

* Rm unused

* Use names

---------

Co-authored-by: Paul Frazee <pfrazee@gmail.com>
Co-authored-by: Eric Bailey <git@esb.lol>
Co-authored-by: Dan Abramov <dan.abramov@gmail.com>

src/lib/statsig/events.ts

@@ -115,6 +115,7 @@ export type LogEvents = {
       | 'ProfileHeaderSuggestedFollows'
       | 'ProfileMenu'
       | 'ProfileHoverCard'
+      | 'AvatarButton'
   }
   'profile:unfollow': {
     logContext:
@@ -126,6 +127,7 @@ export type LogEvents = {
       | 'ProfileMenu'
       | 'ProfileHoverCard'
       | 'Chat'
+      | 'AvatarButton'
   }
   'chat:create': {
     logContext: 'ProfileHeader' | 'NewChatDialog'