Switch FRP check to the new trustworthy source

Previously, FRP state is stored in a setting. It isn't trustworthy
because once an attacker escape from SUW, they can enable adb shell to
override the value.

In V, we revamped FRP. This change switches the check against the new
API.

Bug: 328802636
Test: adb shell cmd persistent_data_block activate
      # Install APK from AOSP Files app failed
Test: adb shell cmd persistent_data_block auto_deactivate
      # Install APK from AOSP Files app succeeded
Change-Id: I404ff769a5158a967539722235e3a7dd269d6e1c