[3.12] gh-119010: Adds docs about `__type_params__` to `functools.update_wrapper` (GH-119012) (#119014)

gh-119010: Adds docs about `__type_params__` to `functools.update_wrapper` (GH-119012)
(cherry picked from commit b04c497f187b0b474e431a6d8d282269b40ffe52)

Co-authored-by: Nikita Sobolev <mail@sobolevn.me>
Co-authored-by: Jelle Zijlstra <jelle.zijlstra@gmail.com>