Revert "Don't request focus on PIN's passwordView unless view is visible"

This reverts commit a72db652.
This reverts commit I4388975fe231e23d8263ccddd5d5c2c4e881e110.

Reason for revert: Performance regression / punting bug

Bug: 417307529
Flag: com.android.systemui.bouncer_lifecycle_fix

Change-Id: I5f1f71e12e9c1dba9806f1543726ea9833c3424c