Turn off screenshots in Rails system tests

I'm using system tests in Rails 5.1, and I'd like to turn off the automated screenshots for failure cases. Usually the failure message is plenty for me to figure out what's going on — and notably, the webdriver browser window always takes focus in order to take a screenshot, which is annoying when I'm working on the code (or trying to do anything else).

Is there a built in way in Capybara configuration to turn off screenshots? I looked through the docs and couldn't find anything stated explicitly, but since this is a new-ish addition to mainstream Rails, I figure that doesn't necessarily mean it doesn't exist.

In Rails 5.1 ActionDispatch::SystemTestCase (from which ApplicationSystemTestCase derives) has a default after_teardown method of

def after_teardown
  take_failed_screenshot
  Capybara.reset_sessions!
  super
end

To stop this from taking a screenshot, the easiest method is to override take_failed_screenshot in your ApplicationSystemTestCase class

class ApplicationSystemTestCase < ActionDispatch::SystemTestCase
  driven_by ...

  # Add this method
  def take_failed_screenshot
    false
  end
end