Eager load routes (fixes failing test)

[andyw8]

@vinistock noticed the test route location returns the location for a valid route was failing if run in isolation.

[andyw8]

After a little digging I found that if you call ::Rails.application.routes.named_routes then it's not populated. The reason the test was passing intermittently was because ::Rails.application.routes.routes calls ::Rails.application.reload_routes_unless_loaded as a side-effect.

I've updated the implementation to call that.

I'm wondering if this should be considered a bug in Rails...

dummy(dev)> ::Rails.application.routes.named_routes
=> 
#<Rails::Engine::LazyRouteSet::NamedRouteCollection:0x000000011d515518
 @path_helpers=#<Set: {}>,
 @path_helpers_module=#<Module:0x0000000101291ce0>,
 @routes={},
 @url_helpers=#<Set: {}>,
 @url_helpers_module=#<Module:0x0000000101291d80>>
dummy(dev)> ::Rails.application.reload_routes_unless_loaded
=> true
dummy(dev)> ::Rails.application.routes.named_routes
=> 
#<Rails::Engine::LazyRouteSet::NamedRouteCollection:0x000000011d515518
 @path_helpers=
  #<Set:
   {:rails_mailers_path,
    :rails_info_properties_path,
    :rails_info_routes_path,
    :rails_info_notes_path,
    :rails_info_path,
    :archive_users_path,
    :users_path,
    :new_user_path,

[andyw8]

(I'll need to verify this against Rails 7)

[andyw8]

Updated for Rails 7.2 compatibility. Related: #500