Move temp blocklist APIs to max-sdk-r list.

These APIs were temporarily blocked but are now being moved to the
max-sdk-r for final release. Tag these APIs as "lo-prio" since we
believe that they are unused.

Bug: 173499988
Test: m
Change-Id: Iee7b3c2d18fb9fb93ffe3fa3fca8ac6be7604673