feat: allow multiple files for FB and Insta [CW-3019] (#8783)

* feat: allow multiple messages

* fix: typo

* feat: send content and attachments both

* refactor: message sequence

* test: multiple attachments for instagram

* test: multiple attachments on facebook

app/services/instagram/send_on_instagram_service.rb

@@ -14,8 +14,13 @@ class Instagram::SendOnInstagramService < Base::SendOnChannelService
   end
 
   def perform_reply
-    send_to_facebook_page attachament_message_params if message.attachments.present?
-    send_to_facebook_page message_params
+    if message.attachments.present?
+      message.attachments.each do |attachment|
+        send_to_facebook_page attachment_message_params(attachment)
+      end
+    end
+
+    send_to_facebook_page message_params if message.content.present?
   rescue StandardError => e
     ChatwootExceptionTracker.new(e, account: message.account, user: message.sender).capture_exception
     # TODO : handle specific errors or else page will get disconnected
@@ -33,8 +38,7 @@ class Instagram::SendOnInstagramService < Base::SendOnChannelService
     merge_human_agent_tag(params)
   end
 
-  def attachament_message_params
-    attachment = message.attachments.first
+  def attachment_message_params(attachment)
     params = {
       recipient: { id: contact.get_source_id(inbox.id) },
       message: {