Disable transparent policy for freeform activities

Non-resizeable activities in freeform have parent bounds constrained to
size compat scaled bounds. Disable transparent policy to inherit from
parent bounds instead of top opaque activity.

Flag: EXEMPT bug fix
Fix: 361813238
Test: atest TransparentPolicyTest
Change-Id: I961b9f86ed594cbd156ddd20354c4680bee9e46d