[automerger skipped] Merge "[DO NOT MERGE] Revert "Fix flickering when switched to the task without IME shown"" into sc-dev am: c4c7d9be am: 8bd698e4 -s ours

am skip reason: subject contains skip directive

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/15460620

Change-Id: Ia6bf3816ff0ef9bb3845526e3c8bb14aa19edcdc