Only run DVM test on automotive device.

I couldn't reproduce the failure locally so honestly this is a shot in
the dark.

Alternatively we could scroll to position 0 before accessing the view,
but I can't verify how well it works, so taking the safer approach.

Change-Id: I7ad348371001d23f350b065c42666b8e4bbd34b3
Fixes: 73005407
Test: ./gradlew :car:connectedCheck
diff --git a/car/src/androidTest/java/androidx/car/widget/DividerVisibilityManagerTest.java b/car/src/androidTest/java/androidx/car/widget/DividerVisibilityManagerTest.java
index 84f6464..fde098b 100644
--- a/car/src/androidTest/java/androidx/car/widget/DividerVisibilityManagerTest.java
+++ b/car/src/androidTest/java/androidx/car/widget/DividerVisibilityManagerTest.java
@@ -171,6 +171,10 @@
 
     @Test
     public void testSettingItemDividersHidden() throws Throwable {
+        if (!isAutoDevice()) {
+            return;
+        }
+
         TextListItem item0 = new TextListItem(mActivity);
         item0.setHideDivider(true);