Use standard Hash for `host_locales` default value
Use standard Hash for `host_locales` default value

`ActiveSupport::OrderedHash` has been deprecated a lot of time ago.

The oldest version of Rails supported by route_translator is 5.0.0,
and there `OrderedHash` is inheriting from Hash and adding some extra
methods.

The oldest Ruby version supported by route_translator is 2.3, and API
docs specifies that

> Hashes enumerate their values in the order that the corresponding
keys were inserted.

this change replaces `ActiveSupport::OrderedHash` with `{}`

Ref:
- https://ruby-doc.org/core-2.3.0/Hash.html
- https://github.com/rails/rails/blob/v5.0.0/activesupport/lib/active_support/ordered_hash.rb#L22

enriclluelles/route_translator,jensb/route_translator,enriclluelles/route_translator,jensb/route_translator