Update lock icon and udfps padding

By default, use 48px. This value can be
overridden by overlays.

Update stroke width of lock and udfps icons from 2.5 => 2
Update stroke width of aod udfps icon from 1 => 1.3

Test: manual
Change-Id: I7c3883c9acac68acc02684a3115e9e6512fe9a1f
Bug: 195564809