Fix opt-in handling of new constants

Reverses to logic to consider everything that is not unspecified or
explicitly opted out as explicit opt-in fo account for the new constants.

This prevents unnecessary and confusing logs when developers correctly
use the new constants

Bug: 385802410
Test: atest BackgroundActivityLaunchTest
Flag: EXEMPT log only
Change-Id: I5864751f37321a80d86c9e61ec1d24c409ddfc24