Correcting the package name used on splash screen window.

The top activity in TaskActivitiesReport can be filter out if the state
of top activity is INITIALIZING, this doesn't make sense for splash
screen, because the state of the top activity do can be INITIALIZING.
Create a filed targetActivityInfo in StartingWindowInfo to specify the
starting activity info.

Bug: 193459277
Test: atest SplashscreenTests StartingSurfaceDrawerTests
Change-Id: Ifec7aff644013a0426e0622162ab24f6b9fb3d8f