Fixing notification clipping in split shade

Clipping Y position was set correctly for non-split shade, but it wasn't
reset for split shade and that caused notifications to be always clipped then.
This change makes clipping aligned with notification scrim.

Fixes: 190032145
Test: Open shade in portrait => rotate to see split shade =>
notifications are not clipped

Change-Id: I14b06acb9c43d0be78126ad5e93136a3ca49b167

packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationPanelViewController.java

@@ -2220,6 +2220,7 @@ public class NotificationPanelViewController extends PanelViewController {
             left = getView().getLeft() - mDisplayCutoutLeftInset;
             right = getView().getRight() - mDisplayCutoutLeftInset;
         } else if (qsPanelBottomY > 0) { // so bounds are empty on lockscreen
+            mAmbientState.setNotificationScrimTop(mSplitShadeNotificationsTopPadding);
             top = Math.min(qsPanelBottomY, mSplitShadeNotificationsTopPadding);
             bottom = mNotificationStackScrollLayoutController.getHeight();
             left = mNotificationStackScrollLayoutController.getLeft();