Clear deprecated effects when saving zen policy

- Deprecated effects are set in NotificationManagerService,
so unset them before setting the NotificationPolicy
- When user clicks on Custom, they are brought to the custom vis effects
page instead of resetting custom values to presets

Fixes: 79383781
Test: manual
Test: NotificationManagerServiceTest testSetNotificationPolicy_preP_setOldNewFields
Change-Id: Id6db9ce2aaeed6321389f8dbfbea65eda30c74ad