Merge branch 'accept-tags-2.5' into 'develop'

TagValidator: Drop unrecognized Tag types

Closes #2952

See merge request pleroma/pleroma!3823

test/pleroma/web/activity_pub/transmogrifier_test.exs

@@ -123,6 +123,20 @@ defmodule Pleroma.Web.ActivityPub.TransmogrifierTest do
 
       assert activity.data["context"] == object.data["context"]
     end
+
+    test "it drops link tags" do
+      insert(:user, ap_id: "https://example.org/users/alice")
+
+      message = File.read!("test/fixtures/fep-e232.json") |> Jason.decode!()
+
+      assert {:ok, activity} = Transmogrifier.handle_incoming(message)
+
+      object = Object.normalize(activity)
+      assert length(object.data["tag"]) == 1
+
+      tag = object.data["tag"] |> List.first()
+      assert tag["type"] == "Mention"
+    end
   end
 
   describe "prepare outgoing" do