BUG: Filtering by task__name not allowed

[eliasfank]

When I go to the Task Signals admin list and use the list filter by task__name, django raises Filtering by task__name not allowed.

Looking for the docs I found this
By default, lookup_allowed() allows access to a model’s local fields, field paths used in list_filter (but not paths from get_list_filter()),

So, we also need to override lookup_allowed with some similar to get it work as expected

What do you think about a fix?

I can open the PR if you prefer