Use LockPatternCheckerWrapper instead of directly calling static method

This way, in unit tests, we can inject a mocked wrapper so
real methods won't be called. This avoids mockito-npe's that
can happen when the static methods are called in the
test and return on a background thread after the test has
already finished.

Flag: EXEMPT bugfix
Test: atest KeyguardPasswordViewControllerTest
Test: atest KeyguardPasswordViewControllerTest KeyguardPinBasedInputViewControllerTest
  KeyguardAbsKeyInputViewControllerTest KeyguardPinViewControllerTest
  KeyguardSecurityContainerControllerTest KeyguardSimPinViewControllerTest
  KeyguardSimPukViewControllerTest
Fixes: 423646800
Change-Id: Ia5194336cd70f2e987d8e80bbb0959d1d127ef42