[3.12] gh-110656: Fix logging test_post_fork_child_no_deadlock() if ASAN (GH-110657) (#110664)

gh-110656: Fix logging test_post_fork_child_no_deadlock() if ASAN (GH-110657)

Skip test_post_fork_child_no_deadlock() if Python is built with ASAN.

Add support.HAVE_ASAN_FORK_BUG.
(cherry picked from commit f901f56313610389027cb4eae80d1d4b071aef69)

Co-authored-by: Victor Stinner <vstinner@python.org>