Fix User.disclose_client never working correctly

Our test environment cheats by constructing a conn with a custom oauth_access/2 function. This assigns a :token to the conn but due to the way it is constructed it has the :user preloaded. When the OAuth Plug fetches a token it does not preload the user, so the check for user.disclose_client was always nil and assumed to be false.

Preloading the :user ensures the test environment matches reality.

changelog.d/disclose_client.fix

@@ -0,0 +1 @@
+Client application data was always missing from the status

lib/pleroma/web/plugs/o_auth_plug.ex

@@ -52,7 +52,7 @@ defmodule Pleroma.Web.Plugs.OAuthPlug do
         where: t.token == ^token
       )
 
-    with %Token{user_id: user_id} = token_record <- Repo.one(token_query),
+    with %Token{user_id: user_id} = token_record <- Repo.one(token_query) |> Repo.preload(:user),
          false <- is_nil(user_id),
          %User{} = user <- User.get_cached_by_id(user_id) do
       {:ok, user, token_record}