[3.13] gh-133413: Fix references to removed Request.has_data (GH-133414) (GH-133946)

The has_data() method of http.request.Request
was removed in version 3.4.
(cherry picked from commit 86c1d43)

Co-authored-by: ppaez <[email protected]>

Author: miss-islington

Doc/library/unittest.mock.rst

@@ -2653,9 +2653,9 @@ with any methods on the mock:
 
 .. code-block:: pycon
 
-    >>> mock.has_data()
+    >>> mock.header_items()
     <mock.Mock object at 0x...>
-    >>> mock.has_data.assret_called_with()  # Intentional typo!
+    >>> mock.header_items.assret_called_with()  # Intentional typo!
 
 Auto-speccing solves this problem. You can either pass ``autospec=True`` to
 :func:`patch` / :func:`patch.object` or use the :func:`create_autospec` function to create a

Doc/library/urllib.request.rst

@@ -1076,7 +1076,7 @@ HTTPHandler Objects
 .. method:: HTTPHandler.http_open(req)
 
    Send an HTTP request, which can be either GET or POST, depending on
-   ``req.has_data()``.
+   ``req.data``.
 
 
 .. _https-handler-objects:
@@ -1088,7 +1088,7 @@ HTTPSHandler Objects
 .. method:: HTTPSHandler.https_open(req)
 
    Send an HTTPS request, which can be either GET or POST, depending on
-   ``req.has_data()``.
+   ``req.data``.
 
 
 .. _file-handler-objects: