Handle shade being expanded during the primary bouncer -> dreaming transition

Also fixes shade blur dropping when primary bouncer -> dreaming finishes with shade open.

Fixes: 409720192
Test: unit tests
Test: verified manually
Flag: com.android.systemui.bouncer_ui_revamp
Flag: com.android.systemui.notification_shade_blur
Change-Id: I97d65d5c7055f8026b4e55fc11933e6f3aab6722