Integrating MagneticNotificationRowManager with NSSL controller.

This is the second part of the series of changes for magnetic
notifications. It integrates the MagneticNotificationRowManager with the
NSSL controller and NotificationSwipeHelper.

Flag: com.android.systemui.magnetic_notification_swipes
Test: manual. Verified magnetic behavior when swiping notifications.
Bug: 390179908
Change-Id: I39e5a8e88f26d7168c5bd5dd5291e7085a275d1e