Don't show the queue until it has more than one item

Fixes: 148661442
Test: manual
Change-Id: Ifbe201a955d9b5895e33a001a378dbd8ba247e3d
diff --git a/car-media-common/src/com/android/car/media/common/playback/PlaybackViewModel.java b/car-media-common/src/com/android/car/media/common/playback/PlaybackViewModel.java
index 80a00f2..4e9957a 100644
--- a/car-media-common/src/com/android/car/media/common/playback/PlaybackViewModel.java
+++ b/car-media-common/src/com/android/car/media/common/playback/PlaybackViewModel.java
@@ -299,7 +299,7 @@
                             .collect(Collectors.toList());
 
             mSanitizedQueue.setValue(filtered);
-            mHasQueue.setValue(!filtered.isEmpty());
+            mHasQueue.setValue(filtered.size() > 1);
         }
 
         @Override