Add @PromotedNotificationLog

This will be used by the PromotedNotificationContentExtractor and
potentially other classes.

Bug: 369151941
Test: builds
Flag: android.app.ui_rich_ongoing
Flag: com.android.systemui.status_bar_notification_chips
Change-Id: I0d71af2bfb8a4a765b76859b138b836688c04f3b