This change makes it easier to resolveforem/forem#16487.
What do I mean by that? To address forem/forem#16487, I need to only
select user's who are authorized to create articles. In
forem/forem#16732 I added a method that will allow chaining of a User
scope. So with this current commit and forem/forem#16732, I'm
triangulating on an approach that will make that change easier.
I did not want to conflate those two, as mixing this PR's change and
what is necessary for the closing PR would create a more complicated
review. Not unduly complicated, but one that will require more tests
and a change in logic. And for someone reviewing the diff, those
concerns could easily be lost.
Yes, I have changed the method signature, but that method signature is
limited to one location:
```shell
❯ rg "Feeds::Import.call"
app/workers/feeds/import_articles_worker.rb
21: ::Feeds::Import.call(users_scope: users_scope, earlier_than: earlier_than)
```
So I look to the method signature a bit as an internal API, hence the change.
Related to forem/forem#16487
4e76771867