Remove dozeui binder call

And put it on the background thread. Move more work
to immediate dispatch to avoid a post() and align
with their caller. Fix some jank with dismiss keyguard

Bug: 331748021
Test: perfetto trace
Flag: ACONFIG com.android.systemui.migrate_clocks_to_blueprint
TEAMFOOD

Change-Id: I51287df636d9d0099d8f8b8f2f7934c87c366a92