Merge "Allow uid processes in foreground task to start activity in FG app switch state" into sc-v2-dev am: a7bea448c9

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/16432376

Change-Id: I19bd7b0102f4c038d33cdb61b35bc14e3bbdd175