Fix channel locking post cleardata

Apps/notification channels that had been marked
non-blockable by oems were being unlocked
post a clear data action until the next time the
device was rebooted. this keeps them locked the
whole time.

Bug: 142065414
Test: atest
Change-Id: If11238efd6f6b3e2d9e97d24adb24626689a87f2