Add featureFlag attribute for new RECORD_SENSITIVE_CONTENT permission

Bug: 26420854
Test: atest RecordSensitiveContentPermissionTest
Test: atest PermissionPolicyTest
Flag: ACONFIG android.permission.flags.sensitive_notification_app_protection TRUNKFOOD
Change-Id: I3ee437ac012d145d7edf04836e63fa48837f1a50
2 files changed