Merge "Set up libtextclassifier_tests into MTS" into rvc-dev am: 0bce29a225 am: be3c7b5e56

Original change: https://googleplex-android-review.googlesource.com/c/platform/external/libtextclassifier/+/11685296

Change-Id: I565c1628001a702fa7743670dac808a66f0eb6a8