Add disable2 flag for rotate suggestions

The SUW team has requested a programmatic way to hide rotation
suggestions during setup. Piggyback on disable2 with new flag,
callbacks already available in NavBarFragment. Downgrade
permissions for disable2 to match disable so SUW can use.

Test: manual with SUW variant
Fixes: 75291849
Change-Id: I1021ee5e1628c36ebf53afe843f903006474163e