DEV: Remove full group refreshes from tests (#25414)

We have all these calls to Group.refresh_automatic_groups! littered throughout the tests. Including tests that are seemingly unrelated to groups. This is because automatic group memberships aren't fabricated when making a vanilla user. There are two places where you'd want to use this:

You have fabricated a user that needs a certain trust level (which is now based on group membership.)
You need the system user to have a certain trust level.
In the first case, we can pass refresh_auto_groups: true to the fabricator instead. This is a more lightweight operation that only considers a single user, instead of all users in all groups.

The second case is no longer a thing after #25400.

spec/lib/topic_query_spec.rb

@@ -1870,7 +1870,6 @@ RSpec.describe TopicQuery do
       SiteSetting.shared_drafts_category = shared_drafts_category.id
       SiteSetting.shared_drafts_allowed_groups =
         Group::AUTO_GROUPS[:trust_level_3].to_s + "|" + Group::AUTO_GROUPS[:staff].to_s
-      Group.refresh_automatic_groups!
     end
 
     context "with destination_category_id" do