Reapply "Replace hidden keyguard states with occluded state"

This reverts commit ea3ba337f1066cd54ecd915f3e776d3cdfa29d5e.

Bug: 361796575
Test: atest KeyguardRootViewModelTest
Flag: EXEMPT bugfix
Change-Id: Ice95cb7e37ba6ff1f8bc017cd27bf91d2f89dad0
3 files changed