Conditionally report SimpleManualPermissionEnforcement lint as ERROR

Certain manual permission checks in AIDL implementations can be replaced
with the @EnforcePermission annotation in a behavior perserving way.
When this is the case, the linter will now report at ERROR severity
This will break the errorprone build, reminding the author to use the
annotation instead.

Bug: 265014041
Test: TH, manually tested with local changes to linter
Change-Id: I9fedd9d9fae19dd7126fa5cc4c410ccf775e0d8a