Only listten to /workspaces path if it exists (#1317)

Co-authored-by: Katie Langerman <langermank@github.com>

Co-authored-by: Katie Langerman <langermank@github.com>

Author: keithamus

lookbook/config/environments/development.rb

@@ -19,7 +19,7 @@
   # Enable server timing
   config.server_timing = true
 
-  config.hotwire_livereload.listen_paths << "/workspaces/css/src/"
+  config.hotwire_livereload.listen_paths << "/workspaces/css/src/" if File.exist?("/workspaces/css/src")
   config.hotwire_livereload.listen_paths << Rails.root.join("../app/assets/javascripts")
   config.hotwire_livereload.force_reload_paths << Rails.root.join("../app/assets/javascripts")