Add a new feature flag and a new permission

Add a feature flag to limit sending of the PACKAGE_CHANGED
broadcast to only the system and the application itself
during component state changes.

Flag: android.content.pm.reduce_broadcasts_for_component_state_changes

Bug: 292261144
Test: Presubmit
Change-Id: I049293abd25f6622a94de00e093029882c85133f