Disable symlink optimizations in the Testing ART APEX. am: a79a6eba31

Original change: https://android-review.googlesource.com/c/platform/art/+/2101705

Change-Id: Id464f0e603e7f4316889d7627b657f4a135a81fc
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>