Make BiometricPrompt fits system bars

Although BiometricPrompt is TYPE_STATUS_BAR_SUB_PANEL, but it doesn't
have any of FLAG_LAYOUT_IN_SCREEN, SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN, or
SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION, we should not remove statusBars()
from its mFitInsetsTypes. This CL restores its behavior of layout.

Fix: 152078356
Test: Manual.
Change-Id: Ie7a884f197d56a3b0ec00a932f2f3473eb20de3e