[3.14] annotationlib docs: note that ForwardRef.evaluate eventually defaults to empty globals (GH-134661) (#134662)

annotationlib docs: note that ForwardRef.evaluate eventually defaults to empty globals (GH-134661)
(cherry picked from commit b51b08a)

Co-authored-by: Jelle Zijlstra <jelle.zijlstra@gmail.com>

Author: miss-islington

Doc/library/annotationlib.rst

@@ -211,6 +211,10 @@ Classes
       means may not have any information about their scope, so passing
       arguments to this method may be necessary to evaluate them successfully.
 
+      If no *owner*, *globals*, *locals*, or *type_params* are provided and the
+      :class:`~ForwardRef` does not contain information about its origin,
+      empty globals and locals dictionaries are used.
+
    .. versionadded:: 3.14