Merge "Invalidate autofill session on IME disconnect" into tm-dev am: c17eae2651 am: 688c534d84

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/18646671

Change-Id: I709057c4bc7fff1ac992f02eabbcbeae0ad14442
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>