Add ACTION_CONSOLIDATED_NOTIFICATION_POLICY_CHANGED broadcast

Also include the updated Policy as an extra (for both this broadcast and ACTION_NOTIFICATION_POLICY_CHANGED) so that apps don't need to do an extra call to retrieve them.

Fixes: 311679701
Test: atest ZenModeHelperTest NotificationManagerZenTest
Change-Id: Ie74027c577477f032531a7c653f678673c52db7e