chore: Refactor MarkMessagesAsReadJob based on conversation id and time stamp (#8217)

- Mark all messages as read by providing the conversation ID and timestamp.
- For Instagram, ensure all previous messages that weren't marked as failed are now marked as read. This is because the read events are only triggered for the most recent message and not for any previous ones.

app/services/instagram/read_status_service.rb

@@ -4,12 +4,7 @@ class Instagram::ReadStatusService
   def perform
     return if instagram_channel.blank?
 
-    process_status if message.present?
-  end
-
-  def process_status
-    @message.status = 'read'
-    @message.save!
+    ::Conversations::MarkMessagesAsReadJob.perform_later(message.conversation.id, message.created_at) if message.present?
   end
 
   def instagram_id