fix: Disable automations on auto-reply emails (#12101)

The term "sorcerer’s apprentice mode" is defined as a bug in a protocol
where, under some circumstances, the receipt of a message causes
multiple messages to be sent, each of which, when received, triggers the
same bug. - RFC3834

Reference: https://github.com/chatwoot/chatwoot/pull/9606

This PR:
- Adds an auto_reply attribute to message.
- Adds an auto_reply attribute to conversation. 
- Disable conversation_created / conversation_opened event if auto_reply
is set.
- Disable message_created event if auto_reply is set.

---------

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

app/models/message.rb

@@ -195,6 +195,12 @@ class Message < ApplicationRecord
     true
   end
 
+  def auto_reply_email?
+    return false unless incoming_email? || inbox.email?
+
+    content_attributes.dig(:email, :auto_reply) == true
+  end
+
   def valid_first_reply?
     return false unless human_response? && !private?
     return false if conversation.first_reply_created_at.present?