Merge "Merge "Fix caching IME status for split screen even when it is not...

Merge "Merge "Fix caching IME status for split screen even when it is not activated" into sc-dev am: 5ded797e am: 2d5b8683" into sc-v2-dev-plus-aosp am: e06271f4

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/15080852

Change-Id: Icddc5d30c450fd5e4a00d0f0dc21de2d3f2f69f6