Merge "SF: Set dirty region bit if transparent region hint changes" into sc-dev am: 5b20104681 am: 616fd70411 am: 99dbaa3972

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/native/+/15240432

Change-Id: Icc7f3da5c4b30a9a3b59b938360a7b5856d92304