Changed retries and rescued in ActivityPub::ProcessingWorker (#14355)

* Changed the number of retries and rescued exceptions in ActivityPub::ProcessingWorker

* Remove RecordNotUnique from rescue

app/workers/activitypub/processing_worker.rb

@@ -3,7 +3,7 @@
 class ActivityPub::ProcessingWorker
   include Sidekiq::Worker
 
-  sidekiq_options backtrace: true
+  sidekiq_options backtrace: true, retry: 8
 
   def perform(account_id, body, delivered_to_account_id = nil)
     ActivityPub::ProcessCollectionService.new.call(body, Account.find(account_id), override_timestamps: true, delivered_to_account_id: delivered_to_account_id, delivery: true)