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

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

Change-Id: If84627bf6cb94db41391202c7f345fbc9588ecf6