Always synchronize the OEM unlock allowed bit to the FRP partition

For devices using OEMLock HAL, OEM unlock allowed bit is maintained by the HAL.
However PersistentDataBlockService will only look at the OEM unlock allowed bit
on the pst partition to make sure FRP data is cleared on a unlockable device.
As a short term fix, make sure the OEM unlock allowed bit on both the HAL and pst
partition is always in sync.

Bug: 67043266
Test: On walleye/taimen, add an account, enable OEM unlock, factory reset
      via fastboot, and observe FRP is not enforced.

Change-Id: Id4a0d81d7a424e17c2751e7e65582b51c14bd073