Make apex availability of libjemalloc5 explicit am: 4552d1e842

Original change: https://android-review.googlesource.com/c/platform/external/jemalloc_new/+/2898089

Change-Id: I34694b503e75f9c30a80e48c1f84845fadf59554
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>