[Fix rails#52570] Remove PWA views and routes if its an API only project

Author: chunlea

railties/lib/rails/generators/rails/app/app_generator.rb

@@ -491,6 +491,7 @@ def delete_app_views_if_api_option
             remove_dir "app/views"
           else
             remove_file "app/views/layouts/application.html.erb"
+            remove_dir  "app/views/pwa"
           end
         end
       end

railties/lib/rails/generators/rails/app/templates/config/routes.rb.tt

@@ -5,10 +5,12 @@ Rails.application.routes.draw do
   # Can be used by load balancers and uptime monitors to verify that the app is live.
   get "up", to: "rails/health#show", as: :rails_health_check
 
+  <%- unless options.api? -%>
   # Render dynamic PWA files from app/views/pwa/*
   get "service-worker", to: "rails/pwa#service_worker", as: :pwa_service_worker
   get "manifest", to: "rails/pwa#manifest", as: :pwa_manifest
 
+  <%- end -%>
   # Defines the root path route ("/")
   # root "posts#index"
 end