Fix routes command for Rails 7.1+

[dtflowers]

Description
Attempt to fix #12

This commit to Rails broke the monkey-patch in this gem that previously forced the eager_loading of routes when the Routes command is run in console.

Specifically, the require_environment! wrapper method on lines 26-29 here was removed entirely, which means the existing monkey-patch in lib/routes_lazy_routes/command/routes_command.rb is never executed.

Instead, the application level Rails.application.require_environment! method is now called directly here when this command is run.

This PR refactors the monkey patch to instead patch the application level Rails.application.require_environment! method directly, prepending the patch to force eager loading only when the routes command is run.

[amatsuda]

@dtflowers This patch looks perfect indeed! Thank you so much!

[amatsuda]

@dtflowers @r7kamura Just release version 0.4.3 gem with this patch. Thanks!