Merge "Change SplashscreenTests for freeform first devices" into stage-aosp-sc-ts-dev am: ffbe5f03c5 am: 297e71db07

Original change: https://googleplex-android-review.googlesource.com/c/platform/cts/+/15676299

Change-Id: I5a14ac22221c3947513ebc674acf45cb9daf168c