Fix how touch deadzone work in RecentsView

- The new design have 3 deadzones Rect:
  - TaskView (for desktop tasks, focused task or all tasks in small screen)
  - Top row
  - Bottom row
- The shorter row between top/bottom row is expanded to cover space between the 2 rows
- The large tile row is expanded to cover space between large and small tiles
- Rect illustration: http://screen/8vHAqrYdUB5Rqbc.png

Fix: 323143607
Fix: 323143607
Test: Tap empty space between tasks, Oveview should not dismiss
Test: Tap empty space on shorter rows in grid, Overview should dismiss
Flag: EXEMPT bugfix
Change-Id: Id59c1238df33dfbe67a696d0836ba393321b38ac