Hide notification content in history

- if the user is locked
- and the user has chosen to hide sensistive content when locked

Test: manual with a work profile with a different pin
Bug: 378088320
Flag: EXEMPT bug fix
Change-Id: Ia70454d9859fb788ffa1f48f88760f88c354cdff
(cherry picked from commit 9df37c3f8be2dedd2e44e52da4de45fba33c6a6e)