Merge "Migrate InputMethodService to use OnBackInvokedDispatcher" into tm-dev am: 93e5edd9 am: 2c0221ca am: 6b575953

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/17076160



Change-Id: I83b956b30d4532ef8de3ca2fbd865cd2fdf9b3e1
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>