Merge "Reset Divider IME state when leaving split-screen" into rvc-dev am: 45e23b280b am: 0a2ada02f2 am: 253ab122e9

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/12151562

Change-Id: I6a4fcece7f6e727b2e9436cd212ea2019b5b2051