Fixed #31061 -- Ignored positional args in django.urls.resolve() when all optional named parameters are missing.

Regression in 76b993a117.

Thanks Claude Paroz for the report and Carlton Gibson for reviews.

docs/releases/3.0.1.txt

@@ -13,3 +13,7 @@ Bugfixes
   inside Jupyter and other environments that force an async context, by adding
   and option to disable :ref:`async-safety` mechanism with
   ``DJANGO_ALLOW_ASYNC_UNSAFE`` environment variable (:ticket:`31056`).
+
+* Fixed a regression in Django 3.0 where ``RegexPattern``, used by
+  :func:`~django.urls.re_path`, returned positional arguments to be passed to
+  the view when all optional named groups were missing (:ticket:`31061`).

docs/topics/http/urls.txt

@@ -53,7 +53,7 @@ algorithm the system follows to determine which Python code to execute:
    arguments:
 
    * An instance of :class:`~django.http.HttpRequest`.
-   * If the matched URL pattern returned no named groups, then the
+   * If the matched URL pattern contained no named groups, then the
      matches from the regular expression are provided as positional arguments.
    * The keyword arguments are made up of any named parts matched by the
      path expression, overridden by any arguments specified in the optional