Merge "Change SplashscreenTests for freeform first devices" into stage-aosp-sc-ts-dev am: ffbe5f03c5 am: 297e71db07 am: 0b2ca70214

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

Change-Id: I8ae7f4051dd9475d1910d6a3c8845e74cc3ba5b5