Reset system fixed to clean storage perm model 2

This is a temporary change and does not need to be shipped as the perm
model 2 never reached any public builds.

Test: Faked OTA and and saw system-fixed tags removed and correctly
      re-set only for the apps needed
Bug: 129422305

Change-Id: I2d3f42123f4175f2ac960c41c63acfc89145e15f