fix: disable email transcript for free plans (#13509)

- Block email transcript functionality for accounts without a paid plan
to prevent SES abuse.

app/services/action_service.rb

@@ -75,6 +75,8 @@ class ActionService
   end
 
   def send_email_transcript(emails)
+    return unless @account.email_transcript_enabled?
+
     emails = emails[0].gsub(/\s+/, '').split(',')
 
     emails.each do |email|