Update state and touch region after one handed overlay changed

The matrix for overall modes x state changes:
-----------------------------------------------------
   Mode     |      State changed     | *Before|*After
-----------------------------------------------------
  OneHanded |  Portrait->Landscape   |  80dp  |  32dp
  OneHanded |  Landscape->Portrait   |  32dp  |  80dp
-----------------------------------------------------
  OneHanded |  Disable->Enable       |  32dp  |  32dp
 (Landscape)|  Enable->Disable       |  32dp  |  32dp
-----------------------------------------------------
  OneHanded |  Disable->Enable       |  32dp  |  80dp
 (Portrait) |  Enable->Disable       |  80dp  |  32dp
-----------------------------------------------------
  NO_BUTTON |  Portrait->Landscape   |  32dp  |  32dp
  NO_BUTTON |  Landscape->Portrait   |  32dp  |  32dp
  2 BUTTON  |  Portrait->Landscape   |  48dp  |  48dp
  2 BUTTON  |  Landscape->Portrait   |  48dp  |  48dp
  3 BUTTON  |  Portrait->Landscape   |  48dp  |  48dp
  3 BUTTON  |  Landscape->Portrait   |  48dp  |  48dp
-----------------------------------------------------
* dimen : navigation_bar_gesture_height

Test: adb bugrepot | grep mOneHandedModeRegion
Test: manually triger one handed
Test: atest WindowInsetsBehaviorTests
Bug: 157958539

Change-Id: I0f4b5d18053058730a06c3c216e849850c0390f4