FEATURE: Create IE Support Plugin (#8520)

This core plugin, which could be split off in the future, allows us to load IE specific code on demand.

Co-authored-by: jjaffeux <j.jaffeux@gmail.com>

lib/plugin/instance.rb

@@ -84,7 +84,7 @@ class Plugin::Instance
 
   def register_anonymous_cache_key(key, &block)
     key_method = "key_#{key}"
-    add_to_class(Middleware::AnonymousCache, key_method, &block)
+    add_to_class(Middleware::AnonymousCache::Helper, key_method, &block)
     Middleware::AnonymousCache.cache_key_segments[key] = key_method
     Middleware::AnonymousCache.compile_key_builder
   end