Fix included modules on Ruby 3.4

[sailor]

We currently get this error when trying to use webmock with Ruby 3.4:

Failure/Error: require File.expand_path('../config/environment', __dir__)

NameError:
  undefined method 'do_get_block' for class 'WebMockHTTPClient'
# /gems/webmock-3.24.0/lib/webmock/http_lib_adapters/httpclient_adapter.rb:233:in 'Module#alias_method'

It seems that it's defining aliases from method that are not included yet is not supported anymore by ruby >= 3.4.

This patch fixes the problem by just including the module before defining the aliases.