Add back changes to gon helper

lib/gitlab/gon_helper.rb

@@ -61,15 +61,15 @@ module Gitlab
     def push_frontend_feature_flag(name, *args, **kwargs)
       enabled = Feature.enabled?(name, *args, **kwargs)
 
-      push_to_gon_features(name, enabled)
+      push_to_gon_attributes(:features, name, enabled)
     end
 
-    def push_to_gon_features(name, enabled)
+    def push_to_gon_attributes(key, name, enabled)
       var_name = name.to_s.camelize(:lower)
       # Here the `true` argument signals gon that the value should be merged
       # into any existing ones, instead of overwriting them. This allows you to
       # use this method to push multiple feature flags.
-      gon.push({ features: { var_name => enabled } }, true)
+      gon.push({ key => { var_name => enabled } }, true)
     end
 
     def default_avatar_url