Add sensitive notification protection exemptions

- Add exemption for systemui
- Add exemption for bug report handlers

Bug: 316955306
Test: atest SensitiveNotificationProtectionControllerTest
Flag: ACONFIG com.android.server.notification.screenshare_notification_hiding DISABLED
Change-Id: I57c92ce890ca0fc3c6942a24788cc04499af912e
3 files changed