Merge "Revert "Ignore to show splash screen if the decorView is not opaque"" into rvc-qpr-dev am: 132a346318

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/13178636

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I157db4fa729821a059489ca07208b21d12857315