Use --headless=new for Chrome in Capybara for a test

Was not working properly in PR#14426

modules/my_page/spec/features/my/my_spent_time_widget_with_a_negative_time_zone_spec.rb

@@ -30,7 +30,8 @@
 
 require_relative '../../support/pages/my/page'
 
-RSpec.describe 'My spent time widget with a negative time zone', :chrome_headless_new, :js,
+RSpec.describe 'My spent time widget with a negative time zone', :js,
+               driver: :chrome_headless_new,
                with_settings: { start_of_week: 1 } do
   let(:beginning_of_week) { monday }
   let(:end_of_week) { sunday }

spec/support/browsers/chrome.rb

@@ -1,5 +1,5 @@
 # rubocop:disable Metrics/PerceivedComplexity
-def register_chrome(language, name: :"chrome_#{language}", override_time_zone: nil)
+def register_chrome(language, name: :"chrome_#{language}", headless: 'old', override_time_zone: nil)
   Capybara.register_driver name do |app|
     options = Selenium::WebDriver::Chrome::Options.new
 
@@ -12,20 +12,7 @@ def register_chrome(language, name: :"chrome_#{language}", override_time_zone: n
       end
     else
       options.add_argument('--window-size=1920,1080')
-      # Our tests are not that stable with the new headless mode, but since
-      # Chrome 120 the old headless mode has browser name
-      # "chrome-headless-shell". This name is not recognized by the current
-      # selenium-webdriver and so some extensions like `execute_cdp` are
-      # missing. This wil be fixed in next selenium-webdriver version. See
-      # https://github.com/SeleniumHQ/selenium/pull/13271 for more information.
-      #
-      # In the meantime, the :chrome_headless_new metadata allows activating the
-      # new headless for tests that need it.
-      if RSpec.current_example.metadata[:chrome_headless_new]
-        options.add_argument('--headless=new')
-      else
-        options.add_argument('--headless=old')
-      end
+      options.add_argument("--headless=#{headless}")
     end
 
     options.add_argument('--no-sandbox')
@@ -109,6 +96,19 @@ def register_chrome(language, name: :"chrome_#{language}", override_time_zone: n
   end
 end
 
+# Register Chrome with new headless implementation
+#
+# Our tests are not that stable with the new headless mode, but since
+# Chrome 120 the old headless mode has browser name
+# "chrome-headless-shell". This name is not recognized by the current
+# selenium-webdriver and so some extensions like `execute_cdp` are
+# missing. This wil be fixed in next selenium-webdriver version. See
+# https://github.com/SeleniumHQ/selenium/pull/13271 for more information.
+#
+# In the meantime, registering a :chrome_headless_new driver which uses the
+# `headless=new` flag for tests that need it.
+register_chrome 'en', name: :chrome_headless_new, headless: 'new'
+
 # Register mocking proxy driver
 register_chrome 'en', name: :chrome_billy do |options|
   options.add_argument("proxy-server=#{Billy.proxy.host}:#{Billy.proxy.port}")