Get rid of all batch order warnings (#8334)

app/workers/refollow_worker.rb

@@ -9,7 +9,7 @@ class RefollowWorker
     target_account = Account.find(target_account_id)
     return unless target_account.protocol == :activitypub
 
-    target_account.followers.where(domain: nil).find_each do |follower|
+    target_account.followers.where(domain: nil).reorder(nil).find_each do |follower|
       # Locally unfollow remote account
       follower.unfollow!(target_account)
 

app/workers/scheduler/backup_cleanup_scheduler.rb

@@ -6,7 +6,7 @@ class Scheduler::BackupCleanupScheduler
   sidekiq_options unique: :until_executed
 
   def perform
-    old_backups.find_each(&:destroy!)
+    old_backups.reorder(nil).find_each(&:destroy!)
   end
 
   private

app/workers/scheduler/email_scheduler.rb

@@ -6,7 +6,7 @@ class Scheduler::EmailScheduler
   sidekiq_options unique: :until_executed
 
   def perform
-    eligible_users.find_each do |user|
+    eligible_users.reorder(nil).find_each do |user|
       next unless user.allows_digest_emails?
       DigestMailerWorker.perform_async(user.id)
     end

app/workers/scheduler/user_cleanup_scheduler.rb

@@ -6,7 +6,7 @@ class Scheduler::UserCleanupScheduler
   sidekiq_options unique: :until_executed
 
   def perform
-    User.where('confirmed_at is NULL AND confirmation_sent_at <= ?', 2.days.ago).find_in_batches do |batch|
+    User.where('confirmed_at is NULL AND confirmation_sent_at <= ?', 2.days.ago).reorder(nil).find_in_batches do |batch|
       Account.where(id: batch.map(&:account_id)).delete_all
       User.where(id: batch.map(&:id)).delete_all
     end