[3.10] gh-97943: PyFunction_GetAnnotations should return a borrowed reference....

[3.10] gh-97943: PyFunction_GetAnnotations should return a borrowed reference. (GH-97949) (GH-97989)

gh-97943: PyFunction_GetAnnotations should return a borrowed reference. (GH-97949)
(cherry picked from commit 6bfb0be8)

Co-authored-by: larryhastings <larry@hastings.org>