Grant launcher control incall permission

Launcher V2 adds a dialer widget, which requires the system permission
CONTROL_INCALL_EXPERIENCE. Permission is needed for the InCallController to bind to the launcher's InCallService, which allows the launcher to be notified about call activity.

Bug: 162955474
Test: manual - built on flame_car
Change-Id: I6426b044df90928e981941c8703ddd975dfa6f99