feat: do not append the global domain for matching subdomains

If the subdomain is url-like, assume it is a valid url and use it for the default domain name. This allows users to specify the default domain for an app even if that is a subdomain of a global vhost.

Closes #3529

plugins/domains/functions

@@ -249,7 +249,7 @@ get_default_vhosts() {
         local SUBDOMAIN=${APP/%\.${VHOST}/}
         local hostname=$(: | plugn trigger nginx-hostname "$APP" "$SUBDOMAIN" "$VHOST")
         if [[ -z $hostname ]]; then
-          if [[ "$APP" == *.* ]] && [[ "$SUBDOMAIN" == "$APP" ]]; then
+          if [[ "$APP" == *.* ]]; then
             local hostname="${APP/\//-}"
           else
             local hostname="${APP/\//-}.$VHOST"