An IPv6 literal followed by :port is only a valid URL authority inside
brackets; http://::1:9119 is unparseable by browsers and urllib. Add
hermes_cli/url_utils.format_url_host and use it at every site that
builds an http URL from a (possibly IPv6) bind host: the named-profile
dashboard attach URL, the browser auto-open URL, the startup banner,
the plugin-activation loopback request, the proxy listening banner, and
the gateway-migration listener URLs. Zone identifiers (%eth0) are
percent-encoded per RFC 6874.
Fixes#67367
Co-authored-by: sjungwon03 <sjungwon03@gmail.com>
a39c2610e5