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

tests/unit/20_domains.bats

@@ -284,3 +284,22 @@ teardown() {
   assert_line ${TEST_APP}.global3.dokku.me
   assert_line ${TEST_APP}.global4.dokku.me
 }
+
+@test "(domains) app name overlaps with global domain.tld" {
+  run /bin/bash -c "dokku domains:set-global dokku.test"
+  echo "output: $output"
+  echo "status: $status"
+  assert_success
+
+  # run domains:clear in order to invoke default vhost creation
+  dokku --quiet apps:create test.dokku.test
+  dokku --quiet domains:clear test.dokku.test
+
+  run /bin/bash -c "dokku domains:report test.dokku.test --domains-app-vhosts"
+  echo "output: $output"
+  echo "status: $status"
+  assert_success
+  assert_output "test.dokku.test"
+
+  dokku --force apps:destroy test.dokku.test
+}