Fix launch animation issue for Desktop tile

- See http://go/b320307512_problems

 for details
- Adding the following to DesktopTaskView's launch animation
  - Problem 1: Animate away DesktopTaskView's background according to fullscreenProgress, instead of a jump cut
  - Problem 2: Animate Overview's background to transparent to reveal the wallpaper behind
  - Problem 3: Animate wallpaper's zoom back to 1
- Problem 4: Apply TaskRectTransltion in TaskViewSimualtor for DesktopTaksView as well, which is used to account for TaskView not in center.
- Problem 4: Also applied RecentsView zoom in animation when TaskView is not in center, to make the whole DesktopTaskView container (backgroundView) moves as a whole. This requires calculating a new pivot before applying the zoom.
- Problem 5: When swipe down or quick switch from home into Desktop, run DesktopRecentsTransitionController without animation to put everything in the end state immediately to avoid animating again
- Problem 6: For swipe down animation, we now let createAdjacentPageAnimForTaskLaunch handle the wallpaper zoom and splash alpha, instead of doubling the effort. In case of Desktop, wallpaper depth be aniamted to 0 (no zoom/blur)
- Problem 6: Bring Desktop live tile to front during swipe down to avoid wallpaper blur applying to the desktop
- Problem 7 and 8: Crop out desktop window outside full screen bound. This is done by calulating intersection between full screen Rect and desktop window's Rect
- Problem 8: Make swipe down to use thumbnailBounds instead of bounds of the first snapshotView, this fixes all situations that first snapshotView's height is different from TaskView (e.g. vertical split, DesktopTaskView)
- Problem 9: Desktop remote target's alpha should remain 1

Bug: 320307512
Test: TaplTestsOverviewDesktop, motion fixes are tested manually
Flag: com.android.window.flags.enable_desktop_windowing_mode
Change-Id: Iae6e594424dfc89851b4f7179b0fb5b5ac5e7f46
Signed-off-by: Alex Chau <alexchau@google.com>