[3.13] gh-125887: Update PyObject_HasAttr exception behavior (GH-125907) (#128283)

gh-125887: Update PyObject_HasAttr exception behavior (GH-125907)

Update PyObject_HasAttr exception behavior

(cherry picked from commit 08a0728)

Co-authored-by: Damien <[email protected]>
Co-authored-by: Shantanu <[email protected]>

Author: 3 people

Doc/c-api/object.rst

@@ -111,7 +111,8 @@ Object Protocol
    .. note::
 
       Exceptions that occur when this calls :meth:`~object.__getattr__` and
-      :meth:`~object.__getattribute__` methods are silently ignored.
+      :meth:`~object.__getattribute__` methods aren't propagated,
+      but instead given to :func:`sys.unraisablehook`.
       For proper error handling, use :c:func:`PyObject_HasAttrWithError`,
       :c:func:`PyObject_GetOptionalAttr` or :c:func:`PyObject_GetAttr` instead.