fix: stream out Create Activity

Backport of: https://git.pleroma.social/pleroma/pleroma/-/merge_requests/3499

CHANGELOG.md

@@ -14,7 +14,12 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
 ### Removed
 
-## 2.4.0 - 2021-08-xx
+## 2.4.1
+
+### Fixed
+- MastodonAPI: Stream out Create activities
+
+## 2.4.0 - 2021-08-08
 
 ### Changed
 

lib/pleroma/web/activity_pub/side_effects.ex

@@ -10,7 +10,6 @@ defmodule Pleroma.Web.ActivityPub.SideEffects do
   collection, and so on.
   """
   alias Pleroma.Activity
-  alias Pleroma.Activity.Ir.Topics
   alias Pleroma.Chat
   alias Pleroma.Chat.MessageReference
   alias Pleroma.FollowingRelationship
@@ -225,6 +224,8 @@ def handle(%{data: %{"type" => "Create"}} = activity, meta) do
         meta
         |> add_notifications(notifications)
 
+      ap_streamer().stream_out(activity)
+
       {:ok, activity, meta}
     else
       e -> Repo.rollback(e)
@@ -245,9 +246,7 @@ def handle(%{data: %{"type" => "Announce"}} = object, meta) do
     if !User.is_internal_user?(user) do
       Notification.create_notifications(object)
 
-      object
-      |> Topics.get_activity_topics()
-      |> Streamer.stream(object)
+      ap_streamer().stream_out(object)
     end
 
     {:ok, object, meta}