chore: Logger for non-existent WhatsApp channels (#11064)

- Add a warning logger for cases where we are getting webhook events for
inactive numbers.
- Add config to discard events for inactive numbers so that the meta
will stop sending events

---------

Co-authored-by: Pranav <pranav@chatwoot.com>

app/jobs/webhooks/whatsapp_events_job.rb

@@ -3,7 +3,11 @@ class Webhooks::WhatsappEventsJob < ApplicationJob
 
   def perform(params = {})
     channel = find_channel_from_whatsapp_business_payload(params)
-    return if channel_is_inactive?(channel)
+
+    if channel_is_inactive?(channel)
+      Rails.logger.warn("Inactive WhatsApp channel: #{channel&.phone_number || "unknown - #{params[:phone_number]}"}")
+      return
+    end
 
     case channel.provider
     when 'whatsapp_cloud'