Add OverviewDesktop test to verify carousel behavior on swipe up

This CL updates a test to verify the behaviour while swiping up from a fullscreen app to Overview and checking if that TaskView is between DesktopTasks (right side) and Grid Tasks (left side).
The test adds the following validations:
- Launches adjacent task while DesktopTask is at the center of the screen
- Swipe up from a fullscreen app to Overview to validate whether the task is between other tasks and desktop tasks.
- Fling back to DesktopTask to dismiss the adjacent focused task

Fix: 353948167
Flag: com.android.launcher3.enable_large_desktop_windowing_tile
Test: TaplTestsOverviewDesktop
Change-Id: Iaa15d4061c3b6ba8fc0d03416b4721cdf3f047c3