feat: auto resolve label option and fixes (#11541)

Co-authored-by: Muhsin Keloth <muhsinkeramam@gmail.com>

app/jobs/conversations/resolution_job.rb

@@ -8,6 +8,7 @@ class Conversations::ResolutionJob < ApplicationJob
       # send message from bot that conversation has been resolved
       # do this is account.auto_resolve_message is set
       ::MessageTemplates::Template::AutoResolve.new(conversation: conversation).perform if account.auto_resolve_message.present?
+      conversation.add_labels(account.auto_resolve_label) if account.auto_resolve_label.present?
       conversation.toggle_status
     end
   end