Add packages with denied adjustments to PackageNotificationPreferences

Adds a method to get packages with denied adjustments for each user, and includes that in the pulled atom. This replaces the previous now-defunct logging for permitted bundle types.

Bug: 409751981
Bug: 413434963
Test: PreferencesHelperTest, atom tester
Flag: android.app.notification_classification_ui

Change-Id: I4dfa6c13bdd5b8a318a7db0133485b72efe9cdd4