Revert "Temp. disable `libnativeloader_e2e_tests` in Mainline Presubmits." am: 62c1ada55e am: 0ff9531e32 am: 964c3f18ce

Original change: https://android-review.googlesource.com/c/platform/art/+/2310532

Change-Id: I4ada73a9d43e8144567acbf3dbd5d884296742bc
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>