Add Account#unavailable? and Account#permanently_unavailable? aliases (#28053)

app/workers/account_deletion_worker.rb

@@ -7,7 +7,7 @@ class AccountDeletionWorker
 
   def perform(account_id, options = {})
     account = Account.find(account_id)
-    return unless account.suspended?
+    return unless account.unavailable?
 
     reserve_username = options.with_indifferent_access.fetch(:reserve_username, true)
     skip_activitypub = options.with_indifferent_access.fetch(:skip_activitypub, false)

app/workers/scheduler/suspended_user_cleanup_scheduler.rb

@@ -21,12 +21,12 @@ class Scheduler::SuspendedUserCleanupScheduler
   def perform
     return if Sidekiq::Queue.new('pull').size > MAX_PULL_SIZE
 
-    clean_suspended_accounts!
+    process_deletion_requests!
   end
 
   private
 
-  def clean_suspended_accounts!
+  def process_deletion_requests!
     # This should be fine because we only process a small amount of deletion requests at once and
     # `id` and `created_at` should follow the same order.
     AccountDeletionRequest.reorder(id: :asc).take(MAX_DELETIONS_PER_JOB).each do |deletion_request|