Set early-wake during transition animation

Parity with legacy. This tells surfaceflinger to allow more
time to composite frames during animations -- reduces likelihood
of missing frames.

Also, pause task-persisting during this period to avoid lock
contention (also parity w/ legacy).

Bug: 258881120
Test: run graphics/coldlaunch/open-youtube microbench and observe
      aggregate for SFSTATS_GLOBAL_MISSEDFRAMES-mean
Change-Id: I29afc5dca935e7b5db338b9f85c405cccafe09cc