Add libtextclassifier to hwasan-postsubmit am: c19a0d46b3 am: e4832ed20e am: 79ca5ace7f

Original change: https://android-review.googlesource.com/c/platform/external/libtextclassifier/+/2032825

Change-Id: I7d5111dd70e87b46a32d5e5131c17e7531c8faf9
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>