Replace malloc_not_svelte with malloc_low_memory. am: e1bcc3ee4a am: c45efb8406

Original change: https://android-review.googlesource.com/c/platform/external/jemalloc_new/+/3062995

Change-Id: Ia9cb7c6261b74719fef1846093b2c96f42d2e2f7
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>