fix: base_url()/site_url() does not work on CLI

[kenjis]

Description
Follow-up #7282
From https://forum.codeigniter.com/showthread.php?tid=88410

assert($currentURI instanceof SiteURI)
at SYSTEMPATH\Helpers\url_helper.php:34

The following functions (and more) does not work:

• base_url
• site_url
• anchor

Checklist:

• Securely signed commits
• Component(s) with PHPDoc blocks, only if necessary or adds value
• Unit testing, with >80% coverage
• User guide updated
• Conforms to style guide

[neznaika0]

Ok. CLIRequest ext. Request ext. OutgoingRequest, but it still has the old URI(). Does it need to be fixed or is it a bug?
https://github.com/kenjis/CodeIgniter4/blob/87454e6f289c3331f3e09d9b0018ae61b01a8dc1/system/HTTP/Request.php#L52C36-L52C36

[kenjis]

@neznaika0 Thank you for pointing out.
Yes, Request is an incoming, server-side HTTP request.
So it should not have URI. The old code remains in place.
See #6698

[kenjis]

@MGatner Thank you for reviews!