feat: Add support for sending CSAT surveys via templates (Whatsapp Twilio) (#13143)

Fixes
https://linear.app/chatwoot/issue/CW-6189/support-for-sending-csat-surveys-via-approved-whatsapp

---------

Co-authored-by: Sivin Varghese <64252451+iamsivin@users.noreply.github.com>
Co-authored-by: Vinay Keerthi <11478411+stonecharioteer@users.noreply.github.com>
Co-authored-by: iamsivin <iamsivin@gmail.com>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

app/models/inbox.rb

@@ -158,6 +158,10 @@ class Inbox < ApplicationRecord
     channel_type == 'Channel::Whatsapp'
   end
 
+  def twilio_whatsapp?
+    channel_type == 'Channel::TwilioSms' && channel.medium == 'whatsapp'
+  end
+
   def assignable_agents
     (account.users.where(id: members.select(:user_id)) + account.administrators).uniq
   end