Fix a rubocop offense

[ydah]

This PR fixes a rubocop offense for InternalAffairs/UndefinedConfig

❯ bundle exec rubocop
Inspecting 50 files
...................C..............................

Offenses:

lib/rubocop/cop/capybara/rspec/have_selector.rb:81:30: C: InternalAffairs/UndefinedConfig: DefaultSelector is not defined in the configuration for Capybara/RSpec/HaveSelector in config/default.yml.
            cop_config.fetch('DefaultSelector', 'css')
                             ^^^^^^^^^^^^^^^^^

50 files inspected, 1 offense detected

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Before submitting the PR make sure the following are checked:

• [x] Feature branch is up-to-date with main (if not - rebase it).
• [x] Squashed related commits together.
• [-] Added tests.
• [-] Updated documentation.
• [-] Added an entry to the CHANGELOG.md if the new code introduces user-observable changes.
• [x] The build (bundle exec rake) passes (be sure to run this locally, since it may produce updated documentation that you will need to commit).

[pirj]

So we have to eat our own dogfood? Does this make sense? We have no capybara code here. I imagine the same will hit rubocop-minitest and rubocop-md, and rubocop-factory_bot, and other. It’s for rubocop itself and rubocop-rspec where this makes sense.

It’s an internal cop, shouldn’t it be looking in config/default.yml for this? Is it possible to fix the cop instead?

[Earlopain]

Sounds reasonable, I openend https://github.com/rubocop/rubocop/pull/13141 which would make this PR unnessesary. Let me know if something in that PR looks strange. It does indeed affect rubocop-factory_bot as well.