CCM-8590: add new page to middleware

Author: alexnuttall

frontend/src/middleware.ts

@@ -8,6 +8,7 @@ const protectedPaths = [
   /^\/create-email-template$/,
   /^\/create-nhs-app-template$/,
   /^\/create-text-message-template$/,
+  /^\/create-letter-template$/,
   /^\/delete-template\/[^/]+$/,
   /^\/edit-email-template\/[^/]+$/,
   /^\/edit-nhs-app-template/,