Skip Exclusive Lease Transaction Check for js specs

What does this MR do and why?

When transactional tests are enabled, we may run into issues with Gitlab::ExclusiveLease which is not expected to be run within transactions.

To avoid false positives, disable this check for JavaScript feature specs run.

Similar MR: !163832 (merged)

spec/support/capybara.rb

@@ -175,6 +175,9 @@
     Sidekiq::Worker.skipping_transaction_check { example.run }
   end
 
+  config.around(:each, :js) do |example|
+    Gitlab::ExclusiveLease.skipping_transaction_check { example.run }
+  end
   # The :capybara_ignore_server_errors metadata means unhandled exceptions raised
   # by the application under test will not necessarily fail the server. This is
   # useful when testing conditions that are expected to raise a 500 error in