Wait for JIT threads to be created in ASAN builds am: 889403b999

Original change: https://android-review.googlesource.com/c/platform/art/+/2176578

Change-Id: I4ef50d9c9ace752092fd02f3e85f13f10fa788e6
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>