Fix initialization order issue causing missing asset errors in Sprockets

Author: camertron

lib/view_component/engine.rb

@@ -50,7 +50,7 @@ class Engine < Rails::Engine # :nodoc:
       end
     end
 
-    config.after_initialize do |app|
+    config.after_routes_loaded do |app|
       ActiveSupport.on_load(:view_component) do
         if defined?(Sprockets::Rails)
           include Sprockets::Rails::Helper