Add JS console errors check (#28682)

spec/support/javascript_errors.rb

@@ -0,0 +1,18 @@
+# frozen_string_literal: true
+
+RSpec.configure do |config|
+  config.after(:each, type: :system) do
+    errors = page.driver.browser.logs.get(:browser)
+    if errors.present?
+      aggregate_failures 'javascript errrors' do
+        errors.each do |error|
+          expect(error.level).to_not eq('SEVERE'), error.message
+          next unless error.level == 'WARNING'
+
+          $stderr.warn 'WARN: javascript warning'
+          $stderr.warn error.message
+        end
+      end
+    end
+  end
+end