2/ Notify adjust touch slop when one handed mode activated

When one handed mode activated, user swipe-up to exit usually
cross over the NavBar region, and then invoke TouchController
intercept touch event to trigger All Apps drawer on Home.

To enhanced the UX of gesture conflict of exit OHM & All Apps,
notify TouchController throught LauncherActivityInterface,
and Launcher dispatch onOneHandedModeStateChanged() event to
all mTouchControllers in DragLayer that touchController can
adjust the touch slop by it's SingleAxisSwipeDetector.

Test: manual trigger One handed mode and swipe-up to exit
Test: monitor minDisplacement of SingleAxisSwipeDetector
      OHM activated : touchSlop x multiplier
      OHM deactivated : touchSlop x 1
Test: check All Apps doesn't mis-trigger when exit one handed mode
Bug: 186235522
Change-Id: I7b9e6e7fa898231697d1866186a5f9b1717a9aa3