Update License spec to use new widget

What does this MR do and why?

As per #435054 (closed) , a new license widget was introduced by !138141 (diffs)

This MR updates the testid used to find license names in the MR widget.

How to set up and validate locally

This spec runs against Staging

GITLAB_QA_USER_AGENT =<USER_AGENT> GITLAB_ADMIN_USERNAME=<ADMIN_USERNAME> GITLAB_ADMIN_PASSWORD="<ADMIN_PASSWORD>" GITLAB_USERNAME=<USERNAME> GITLAB_QA_ACCESS_TOKEN="<ACCESS_TOKEN>" GITLAB_PASSWORD="<GITLAB_PASSWORD>"  QA_DEBUG=true WEBDRIVER_HEADLESS=true bundle exec bin/qa Test::Instance::All https://staging.gitlab.com qa/specs/features/ee/browser_ui/13_secure/license_scanning_spec.rb

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.