mrf: defang policy modules for filtering user profile objects

lib/pleroma/web/activity_pub/mrf/simple_policy.ex

@@ -105,8 +105,8 @@ defp check_report_removal(%{host: actor_host} = _actor_info, %{"type" => "Flag"}
   defp check_report_removal(_actor_info, object), do: {:ok, object}
 
   @impl true
-  def filter(object) do
-    actor_info = URI.parse(object["actor"])
+  def filter(%{"actor" => actor} = object) do
+    actor_info = URI.parse(actor)
 
     with {:ok, object} <- check_accept(actor_info, object),
          {:ok, object} <- check_reject(actor_info, object),
@@ -119,4 +119,6 @@ def filter(object) do
       _e -> {:reject, nil}
     end
   end
+
+  def filter(object), do: {:ok, object}
 end

lib/pleroma/web/activity_pub/mrf/user_allowlist.ex

@@ -19,10 +19,12 @@ defp filter_by_list(%{"actor" => actor} = object, allow_list) do
   end
 
   @impl true
-  def filter(object) do
-    actor_info = URI.parse(object["actor"])
+  def filter(%{"actor" => actor} = object) do
+    actor_info = URI.parse(actor)
     allow_list = Config.get([:mrf_user_allowlist, String.to_atom(actor_info.host)], [])
 
     filter_by_list(object, allow_list)
   end
+
+  def filter(object), do: {:ok, object}
 end