chore: Move Whatsapp template sync to cron (#4858)

syncing WhatsApp templates job is moved to a cron job for a better user experience. The Templates are synced at 15-minute intervals now.

app/models/channel/whatsapp.rb

@@ -25,6 +25,7 @@ class Channel::Whatsapp < ApplicationRecord
 
   validates :phone_number, presence: true, uniqueness: true
   before_save :validate_provider_config
+  after_create :sync_templates
 
   def name
     'Whatsapp'
@@ -62,10 +63,6 @@ class Channel::Whatsapp < ApplicationRecord
   end
 
   def sync_templates
-    # to prevent too many api calls
-    last_updated = message_templates_last_updated || 1.day.ago
-    return if Time.current < (last_updated + 12.hours)
-
     response = HTTParty.get("#{api_base_path}/configs/templates", headers: api_headers)
     update(message_templates: response['waba_templates'], message_templates_last_updated: Time.now.utc) if response.success?
   end