Use dev option to disable notification protections

Bug: 316955558
Bug: 316954829
Flag: ACONFIG com.android.server.notification.sensitive_notification_app_protection DISABLED
Flag: ACONFIG com.android.server.notification.screenshare_notification_hiding DISABLED
Test: atest SensitiveContentProtectionManagerServiceTest
Test: atest SensitiveNotificationProtectionControllerTest
Change-Id: Ie84e64414b952cea89fe01f3311de0d4af0a92fe