Flake: prevent axe-core from setting page load timeout

spec/support/axe_core.rb

@@ -37,4 +37,14 @@ def check_accessibility(a11y_skip:)
 
 RSpec.configure do |config|
   config.include(AccessibilityOverrides, type: :system)
+
+  # axe-core-api shrinks the Selenium page_load timeout to 1s while it runs
+  # (lib/axe/api/run.rb), which intermittently fails under CI load with
+  # "Navigation timed out after 1000 ms". Neutralize the setter so it can't.
+  # https://github.com/dequelabs/axe-core-gems/issues/386
+  config.before(:each, type: :system) do
+    page.driver.browser.manage.timeouts.instance_eval do
+      def page_load=(*); end
+    end
+  end
 end

spec/support/capybara.rb

@@ -11,7 +11,7 @@
 using = ENV.fetch("DRIVER", :firefox).to_sym
 
 RSpec.configure do |config|
-  config.before(:each, type: :system) do
+  config.prepend_before(:each, type: :system) do
     driven_by(:selenium, using:) do |driver|
       driver.add_preference("browser.download.folderList", 2)
       driver.add_preference("browser.download.manager.showWhenStarting", false)