Merge "Fix IME callback not unregistered when IME is up during an IMM client...

Merge "Fix IME callback not unregistered when IME is up during an IMM client switch." into tm-dev am: 43572500 am: 8dd20d76 am: 0a070598 am: f8da94b1

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/18699773



Change-Id: I40c8ac3585242ed2887f1e81f4afdf9e2acd1cc0
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>