Use DPC permission policy for notification settings

 Enable or disable notification settings based on the active DO/PO permission policy.
  - PERMISSION_POLICY_AUTO_GRANT or PERMISSION_POLICY_AUTO_DENY: disabled
  - PERMISSION_POLICY_PROMPT: enabled

Flag: com.android.settings.flags.notification_use_dpc_policy

Test: atest BlockPreferenceControllerTest
Test: atest AppNotificationRepositoryTest

Bug: 376360807
Change-Id: I78f883cd42ca6c31e7fb38a114af76c4332e3e9e
5 files changed