Merge "Only allow system or sysui to set launch activity type" into sc-dev am:...

Merge "Only allow system or sysui to set launch activity type" into sc-dev am: 8f5d0a87 am: 86561720 am: 5e9f939e

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/14613436

Change-Id: I72230c29b917c53cb5eab3317ca6f928d634bd56