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.

plugins/chat/spec/requests/chat/api/channel_threads_controller_spec.rb

@@ -9,7 +9,7 @@ RSpec.describe Chat::Api::ChannelThreadsController do
   before do
     SiteSetting.chat_enabled = true
     SiteSetting.chat_allowed_groups = Group::AUTO_GROUPS[:everyone]
-    Group.refresh_automatic_groups!
+
     sign_in(current_user)
   end
 

plugins/chat/spec/requests/chat/api/direct_messages_controller_spec.rb

@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 RSpec.describe Chat::Api::DirectMessagesController do
-  fab!(:current_user) { Fabricate(:user) }
+  fab!(:current_user) { Fabricate(:user, refresh_auto_groups: true) }
   fab!(:user1) { Fabricate(:user) }
   fab!(:user2) { Fabricate(:user) }
   fab!(:user3) { Fabricate(:user) }
@@ -21,8 +21,6 @@ RSpec.describe Chat::Api::DirectMessagesController do
   end
 
   describe "#create" do
-    before { Group.refresh_automatic_groups! }
-
     describe "dm with one other user" do
       let(:usernames) { user1.username }
       let(:direct_message_user_ids) { [current_user.id, user1.id] }

plugins/chat/spec/requests/core_ext/latest_performance_spec.rb

@@ -5,7 +5,6 @@ describe ListController do
 
   before do
     SiteSetting.chat_enabled = true
-    Group.refresh_automatic_groups!
     sign_in(current_user)
   end