i18n.rb in activesupport-7.0.0.alpha1

- old
+ new

@@ -3,9 +3,10 @@
 require "active_support/core_ext/hash/deep_merge"
 require "active_support/core_ext/hash/except"
 require "active_support/core_ext/hash/slice"
 begin
   require "i18n"
+  require "i18n/backend/fallbacks"
 rescue LoadError => e
   $stderr.puts "The i18n gem is not available. Please add it to your Gemfile and run bundle install"
   raise e
 end
 require "active_support/lazy_load_hooks"