Do not dismiss priority children of a group being dismissed

These notifications are never visually part of the group, and should not be dismissed.  The NotificationManagerService already checks the channel for this exception, but the SystemUI NotifCollection was not.

Fixes: 287747787
Test: atest NotifCollectionTest
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:e6efbb4127bd31a3a370b8715f93e9ac92cbd34f)
Merged-In: I6ee36618889b4fe1c8999ff149034a7db63fcbb7
Change-Id: I6ee36618889b4fe1c8999ff149034a7db63fcbb7
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/notification/collection/NotifCollection.java b/packages/SystemUI/src/com/android/systemui/statusbar/notification/collection/NotifCollection.java
index 8aeefee..d2c6d4b 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/notification/collection/NotifCollection.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/notification/collection/NotifCollection.java
@@ -840,6 +840,7 @@
                 && !hasFlag(entry, Notification.FLAG_ONGOING_EVENT)
                 && !hasFlag(entry, Notification.FLAG_BUBBLE)
                 && !hasFlag(entry, Notification.FLAG_NO_CLEAR)
+                && (entry.getChannel() == null || !entry.getChannel().isImportantConversation())
                 && entry.getDismissState() != DISMISSED;
     }
 
diff --git a/packages/SystemUI/tests/src/com/android/systemui/statusbar/notification/collection/NotifCollectionTest.java b/packages/SystemUI/tests/src/com/android/systemui/statusbar/notification/collection/NotifCollectionTest.java
index 540bda6..9037df8 100644
--- a/packages/SystemUI/tests/src/com/android/systemui/statusbar/notification/collection/NotifCollectionTest.java
+++ b/packages/SystemUI/tests/src/com/android/systemui/statusbar/notification/collection/NotifCollectionTest.java
@@ -1675,11 +1675,21 @@
     }
 
     @Test
+    public void testCanDismissOtherNotificationChildren() {
+        // GIVEN an ongoing notification
+        final NotificationEntry container = new NotificationEntryBuilder()
+                .setGroup(mContext, "group")
+                .build();
+
+        // THEN its children are dismissible
+        assertTrue(mCollection.shouldAutoDismissChildren(
+                container, container.getSbn().getGroupKey()));
+    }
+
+    @Test
     public void testCannotDismissOngoingNotificationChildren() {
         // GIVEN an ongoing notification
         final NotificationEntry container = new NotificationEntryBuilder()
-                .setPkg(TEST_PACKAGE)
-                .setId(47)
                 .setGroup(mContext, "group")
                 .setFlag(mContext, FLAG_ONGOING_EVENT, true)
                 .build();
@@ -1693,6 +1703,7 @@
     public void testCannotDismissNoClearNotifications() {
         // GIVEN an no-clear notification
         final NotificationEntry container = new NotificationEntryBuilder()
+                .setGroup(mContext, "group")
                 .setFlag(mContext, FLAG_NO_CLEAR, true)
                 .build();
 
@@ -1702,11 +1713,25 @@
     }
 
     @Test
+    public void testCannotDismissPriorityConversations() {
+        // GIVEN an no-clear notification
+        NotificationChannel channel =
+                new NotificationChannel("foo", "Foo", NotificationManager.IMPORTANCE_HIGH);
+        channel.setImportantConversation(true);
+        final NotificationEntry container = new NotificationEntryBuilder()
+                .setGroup(mContext, "group")
+                .setChannel(channel)
+                .build();
+
+        // THEN its children are not dismissible
+        assertFalse(mCollection.shouldAutoDismissChildren(
+                container, container.getSbn().getGroupKey()));
+    }
+
+    @Test
     public void testCanDismissFgsNotificationChildren() {
         // GIVEN an FGS but not ongoing notification
         final NotificationEntry container = new NotificationEntryBuilder()
-                .setPkg(TEST_PACKAGE)
-                .setId(47)
                 .setGroup(mContext, "group")
                 .setFlag(mContext, FLAG_FOREGROUND_SERVICE, true)
                 .build();