Add persistentEarlyWakeupRequired to BlurUtils to support early wake up flag...

Add persistentEarlyWakeupRequired to BlurUtils to support early wake up flag being enabled for a longer period of time.

The plan is to set this to true when we are on the lockscreen to handle bouncer blur scenarios

Other changes:
 - remove code duplication and keep changes to earlyWakeupEnabled flag isolated to two methods.

Bug: 393199337
Bug: 381263619
Test: unit tests pending, tracked here 381263619
Flag: EXEMPT, new field that doesn't get set when flag is not enabled (controlled in child CLs)
Change-Id: I69e316a9e570bb1f2f7490615c29ec87e8b96963