Merge "Fix IME test to be compatible with WindowOnBackInvokedDispatcher" into tm-dev am: 024b8dbf1d

Original change: https://googleplex-android-review.googlesource.com/c/platform/cts/+/18868923

Change-Id: Idbea115056eb5edfba72fd3e863520c674c1f9ec
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>