All test fail due to `FrozenError`

[jgomo3]

community-engine-rails/docs/development/dev-setup.md

Line 44 in 16d9cd9

docker compose run --rm app rspec

All the test fail with:

An error occurred while loading ./spec/models/better_together/<some>_spec.rb.
Failure/Error: Rails.application.initialize!

FrozenError:
  can't modify frozen Array: ["/usr/local/bundle/gems/turbo-rails-2.0.13/app/channels", "/usr/local/bundle/gems/turbo-rails-2.0.13/app/controllers", "/usr/local/bundle/gems/turbo-rails-2.0.13/app/controllers/concerns", "/usr/local/bundle/gems/turbo-rails-2.0.13/app/helpers", "/usr/local/bundle/gems/turbo-rails-2.0.13/app/models", "/usr/local/bundle/gems/turbo-rails-2.0.13/app/models/concerns", "/usr/local/bundle/gems/turbo-rails-2.0.13/app/jobs", "/usr/local/bundle/gems/importmap-rails-2.1.0/app/helpers", "/usr/local/bundle/gems/importmap-rails-2.1.0/app/controllers", "/usr/local/bundle/gems/actiontext-7.1.5.1/app/helpers", "/usr/local/bundle/gems/actiontext-7.1.5.1/app/models"]
# /usr/local/bundle/gems/railties-7.1.5.1/lib/rails/engine.rb:581:in `unshift'
# /usr/local/bundle/gems/railties-7.1.5.1/lib/rails/engine.rb:581:in `block in <class:Engine>'
# /usr/local/bundle/gems/railties-7.1.5.1/lib/rails/initializable.rb:32:in `instance_exec'
# /usr/local/bundle/gems/railties-7.1.5.1/lib/rails/initializable.rb:32:in `run'
# /usr/local/bundle/gems/railties-7.1.5.1/lib/rails/initializable.rb:61:in `block in run_initializers'
# /usr/local/bundle/gems/railties-7.1.5.1/lib/rails/initializable.rb:50:in `each'
# /usr/local/bundle/gems/railties-7.1.5.1/lib/rails/initializable.rb:50:in `tsort_each_child'
# /usr/local/bundle/gems/railties-7.1.5.1/lib/rails/initializable.rb:50:in `each'
# /usr/local/bundle/gems/railties-7.1.5.1/lib/rails/initializable.rb:50:in `tsort_each_child'
# /usr/local/bundle/gems/railties-7.1.5.1/lib/rails/initializable.rb:60:in `run_initializers'
# /usr/local/bundle/gems/railties-7.1.5.1/lib/rails/application.rb:426:in `initialize!'
# ./spec/dummy/config/environment.rb:7:in `<top (required)>'
# /usr/local/bundle/gems/zeitwerk-2.7.2/lib/zeitwerk/core_ext/kernel.rb:34:in `require'
# ./spec/rails_helper.rb:6:in `<top (required)>'
# /usr/local/bundle/gems/zeitwerk-2.7.2/lib/zeitwerk/core_ext/kernel.rb:34:in `require'
# ./spec/models/better_together/wizard_step_spec.rb:5:in `<top (required)>'
No examples found.