Make Notification long clickable

Our ENR View is not marked long-clickable in terms of accessibility( see b/264948201 ).

It does not mean that the view is not long clickable. Currently ENR handles long click from both interaction and accessibility perspective. It is always on in terms of accessibility. However, it is not marked as long-clickable.

This PR marks AccessibilityNode info long clickable in terms of accessibility according to Notification State(Notification View, GUT and LeaveBehind). Address the NotificationSnooze integration test to verify this change.

Test: atest PlatformScenarioTests:android.platform.test.scenario.sysui.notification.NotificationSnooze
Bug: b/264948201
Change-Id: I713f103149c53d694193aaeef5dc309efe3f322e