[AE Flicker Test] From a split A|B, let A launch C with
alwaysExpand=true, expect C to overlay split A|B.

Test: atest MainActivityStartsSecondaryWithAlwaysExpand

Bug: 238043427

Change-Id: I9e4f06a8ed01352d5442f7d31f0a41fcc0d05c8c
7 files changed