Merge "Fix wrong alpha value when animation IME with split" into udc-dev am: 2b02fbd8

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22325027



Change-Id: Ic1de5eac21b71f01482607a7b4cdcd317e8d04c5
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>