[automerged blank] Export libtextclassifier to mainline-prod 2p: 13125538c0

Blank merge reason: Change-Id I5bc23741edf1da74fc15a4b25f4b43efe352e88b with SHA-1 340b910a1d is in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/external/libtextclassifier/+/13332198

Change-Id: I5c1d330e763d9bb3f7aec12b73cd5fc4e80f1e3c