DEV: Oneboxer wildcard subdomains (PR #13015)

Allows a wildcard to be used as a subdomain on Oneboxer-related SiteSettings, e.g.:

  • force_get_hosts
  • cache_onebox_response_body_domains
  • force_custom_user_agent_hosts

GitHub

Looks like one test is failing @jbrw?

Test failure is unrelated and fixed on main already!