Chore: Improve conversation auto resolution (#3405)

Fixes: #1583

app/jobs/account/conversations_resolution_scheduler_job.rb

@@ -0,0 +1,9 @@
+class Account::ConversationsResolutionSchedulerJob < ApplicationJob
+  queue_as :scheduled_jobs
+
+  def perform
+    Account.where.not(auto_resolve_duration: nil).all.each do |account|
+      Conversations::ResolutionJob.perform_later(account: account)
+    end
+  end
+end