Merge branch 'main' into glitch-soc/merge-upstream

Conflicts:
- `app/controllers/accounts_controller.rb`:
  Upstream introduced support for private pinned toots, but glitch-soc's query
  was a bit different as it filtered out local-only toots.
  Used upstream's query, while adding local-only filtering back.
- `app/controllers/activitypub/collections_controller.rb`:
  Same thing with regards to local-only posts.
- `app/validators/status_pin_validator.rb`:
  Not a real conflict, but the line below was different in glitch-soc due to
  the configurable pinned toots limit.

app/lib/activitypub/activity/accept.rb

@@ -3,7 +3,7 @@
 class ActivityPub::Activity::Accept < ActivityPub::Activity
   def perform
     return accept_follow_for_relay if relay_follow?
-    return follow_request_from_object.authorize! unless follow_request_from_object.nil?
+    return accept_follow!(follow_request_from_object) unless follow_request_from_object.nil?
 
     case @object['type']
     when 'Follow'
@@ -19,7 +19,16 @@ class ActivityPub::Activity::Accept < ActivityPub::Activity
     return if target_account.nil? || !target_account.local?
 
     follow_request = FollowRequest.find_by(account: target_account, target_account: @account)
-    follow_request&.authorize!
+    accept_follow!(follow_request)
+  end
+
+  def accept_follow!(request)
+    return if request.nil?
+
+    is_first_follow = !request.target_account.followers.local.exists?
+    request.authorize!
+
+    RemoteAccountRefreshWorker.perform_async(request.target_account_id) if is_first_follow
   end
 
   def accept_follow_for_relay

app/lib/activitypub/activity/add.rb

@@ -4,8 +4,7 @@ class ActivityPub::Activity::Add < ActivityPub::Activity
   def perform
     return unless @json['target'].present? && value_or_id(@json['target']) == @account.featured_collection_url
 
-    status   = status_from_uri(object_uri)
-    status ||= fetch_remote_original_status
+    status = status_from_object
 
     return unless !status.nil? && status.account_id == @account.id && !@account.pinned?(status)