Improve IME hiding animation when uncloked by password

- Clean up KeyguardPasswordViewController#onPause to reset the state afer
IME hiding animation finished.
- Clean up startDisappearAnimation for IME WindowInsets animation
  and {begin, end}JankInstrument logic to make easier maintain.
- Make sure invoking resetPasswordText only when the password is not match
  or after IME hiding animation finished to prevent unexpected show
  request by TextView#setText - > InputMethodManger#restartInput.

Fix: 178385387
Test: manual as issue steps
Test: atest KeyguardSecurityContainerControllerTest
Change-Id: Ib0d481919dc3afe104eb45d668619c45377f9b29