Integrate OneHandedTutorialHandler with OneHandedState

Previously if user do not trigger OHM, target view was attached
to window and setVisbility INVISIBLE.
Refactor to improve memory & perforamcne for systemui, and align
the state changes of one handed controller

1) Bind OneHandedController OneHandedState to handle target view
   attach and remove from window.
2) Do NOT create view and attach to window until STATE_ENTERING,
   remove legacy redundant visibility change flow.
3) Detach view from window when STATE_NONE
4) Refine OneHandedState static field definition
5) Consolidate OneHandedTutorialHandlerTest

Test: atest WMShellUnitTests
Test: atest OneHandedTutorialHandlerTest
Test: adb shell dumpsys activity service com.android.systemui
Test: adb shell settings put secure one_handed_tutorial_show_count 0
Test: manual trigger OHM
Test: Trigger OHM and invoke onConfigurationChanged()
Bug: 185558765
Change-Id: I3e9666e2379bceb23e3f80f0d8617a7884100a72