Turn on the new connected device page by default

Bug: 69926683
Test: RunSettingsRoboTests
Change-Id: Ice589b825226e92eace5f5fa6b58499a13e36ef8

tests/robotests/src/com/android/settings/connecteddevice/AdvancedConnectedDeviceDashboardFragmentTest.java

@@ -147,6 +147,11 @@ public class AdvancedConnectedDeviceDashboardFragmentTest {
         assertThat(keys).doesNotContain(mSmsMirroringPreferenceController.getPreferenceKey());
     }
 
+    @Test
+    public void testGetCategoryKey_returnCategoryDevice() {
+        assertThat(mFragment.getCategoryKey()).isEqualTo(CategoryKey.CATEGORY_DEVICE);
+    }
+
     @Test
     public void testNonIndexableKeys_existInXmlLayout() {
         final Context context = RuntimeEnvironment.application;