Revert "removes unused optional argument in AS::Dependencies::Loadable#load"

This argument is there because that's the signature of Kernel#load.

This reverts commit bf3fa34e.

activesupport/lib/active_support/dependencies.rb

@@ -246,7 +246,7 @@ def load_dependency(file)
         raise
       end
 
-      def load(file)
+      def load(file, wrap = false)
         result = false
         load_dependency(file) { result = super }
         result