Add source activity to values passed to LaunchingBoundsPositioner.

Bug: 64144308
Test: bit FrameworksServicesTests:com.android.server.am.LaunchingBoundsControllerTests
Test: bit FrameworksServicesTests:com.android.server.am.LaunchingTaskPositionerTests
Test: bit FrameworksServicesTests:com.android.server.am.LaunchingActivityPositionerTests
Change-Id: I8a9d2a41e923e972c11db0b79854ff4a6a742d1c
7 files changed