Bind children dynamically in new pipeline (2/2)

Support setting a logical child count on the notification group view.
Since we are filtering out the notifications and their views entirely in
the new pipeline, we can't just use the number of children views on the
notification group view to determine the "+X" value in the group view UX
for how many children are in the unexanded group. So instead we set this
value directly.

Bug: 145748993
Test: add notification group and see overflow values are accurate in
both old and new pipeline

Change-Id: I60bc58994a77bc3801f062dedc41faaee1d48494
diff --git a/packages/SystemUI/src/com/android/systemui/bubbles/BubbleController.java b/packages/SystemUI/src/com/android/systemui/bubbles/BubbleController.java
index 669a86b..7bdeb1c 100644
--- a/packages/SystemUI/src/com/android/systemui/bubbles/BubbleController.java
+++ b/packages/SystemUI/src/com/android/systemui/bubbles/BubbleController.java
@@ -1110,7 +1110,7 @@
 
     private void handleSummaryDismissalInterception(NotificationEntry summary) {
         // current children in the row:
-        final List<NotificationEntry> children = summary.getChildren();
+        final List<NotificationEntry> children = summary.getAttachedNotifChildren();
         if (children != null) {
             for (int i = 0; i < children.size(); i++) {
                 NotificationEntry child = children.get(i);