Merge "Prevent caching unexpected IME shown state for legacy split" into sc-dev am: cb320bf9

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/13838654

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I3991a8c5d8cd94444533e04bcbe40e52e3b2ed0c