Merge "Reduce flake in pthread mutex timed lock tests." into main am: 8fbe373e7a am: 37f457e54d

Original change: https://android-review.googlesource.com/c/platform/bionic/+/3341835

Change-Id: I1dfce82a7c140b024a501027d577ae9fd3d2aba1
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>