* fix(dashboard): unblock basic auth plugin during interactive password setup
When the dashboard prompts for username/password on a non-loopback bind,
also remove the bundled basic provider from plugins.disabled so
discover_plugins(force=True) can register it (#54489).
* test(dashboard): cover basic auth plugin blocked by plugins.disabled
Regression harness for #54489: credentials in config are not enough when
the bundled basic provider is on the deny-list.
xxxigm