[3.13] gh-124873: Tolerate 100 ms in TimerfdTests on Android (GH-127101) (#127105)

gh-124873: Tolerate 100 ms in TimerfdTests on Android (GH-127101)

On Android, TimerfdTests of test_os now uses 100 ms accuracy instead
of 10 ms.
(cherry picked from commit bab4b0462ebd782dd6965beb0ccae6341af43ceb)

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