Merge "Launch to fullscreen when re-open from lockscreen and in PiP" into rvc-dev am: c99594ee88 am: 46750d6aa3

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/12047260

Change-Id: I23b31fed0140aab34a52036dfee5d832dd60f456