Refresh Users much more aggressively when processing Move activities

The default refresh interval of 1 day is woefully inadequate here;
users expect to be able to add the alias to their new account and
press the move button on their old account and have it work.

This allows callers to specify a maximum age before a refetch is
triggered. We set that to 5s for the move code, as a nice compromise
between Making Things Work and ensuring that this can't be used
to hammer a remote server

lib/pleroma/user.ex

@@ -969,15 +969,16 @@ defp maybe_send_registration_email(%User{email: email} = user) when is_binary(em
 
   defp maybe_send_registration_email(_), do: {:ok, :noop}
 
-  def needs_update?(%User{local: true}), do: false
+  def needs_update?(user, options \\ [])
+  def needs_update?(%User{local: true}, _options), do: false
+  def needs_update?(%User{local: false, last_refreshed_at: nil}, _options), do: true
 
-  def needs_update?(%User{local: false, last_refreshed_at: nil}), do: true
-
-  def needs_update?(%User{local: false} = user) do
-    NaiveDateTime.diff(NaiveDateTime.utc_now(), user.last_refreshed_at) >= 86_400
+  def needs_update?(%User{local: false} = user, options) do
+    NaiveDateTime.diff(NaiveDateTime.utc_now(), user.last_refreshed_at) >=
+      Keyword.get(options, :maximum_age, 86_400)
   end
 
-  def needs_update?(_), do: true
+  def needs_update?(_, _options), do: true
 
   # "Locked" (self-locked) users demand explicit authorization of follow requests
   @spec can_direct_follow_local(User.t(), User.t()) :: true | false
@@ -1980,10 +1981,10 @@ def html_filter_policy(_), do: Config.get([:markup, :scrub_policy])
 
   def fetch_by_ap_id(ap_id), do: ActivityPub.make_user_from_ap_id(ap_id)
 
-  def get_or_fetch_by_ap_id(ap_id) do
+  def get_or_fetch_by_ap_id(ap_id, options \\ []) do
     cached_user = get_cached_by_ap_id(ap_id)
 
-    maybe_fetched_user = needs_update?(cached_user) && fetch_by_ap_id(ap_id)
+    maybe_fetched_user = needs_update?(cached_user, options) && fetch_by_ap_id(ap_id)
 
     case {cached_user, maybe_fetched_user} do
       {_, {:ok, %User{} = user}} ->

lib/pleroma/web/activity_pub/transmogrifier.ex

@@ -576,7 +576,12 @@ def handle_incoming(
         _options
       ) do
     with %User{} = origin_user <- User.get_cached_by_ap_id(origin_actor),
-         {:ok, %User{} = target_user} <- User.get_or_fetch_by_ap_id(target_actor),
+         # Use a dramatically shortened maximum age before refresh here because it is reasonable
+         # for a user to
+         # 1. Add the alias to their new account and then
+         # 2. Press the button on their new account
+         # within a very short period of time and expect it to work
+         {:ok, %User{} = target_user} <- User.get_or_fetch_by_ap_id(target_actor, maximum_age: 5),
          true <- origin_actor in target_user.also_known_as do
       ActivityPub.move(origin_user, target_user, false)
     else