[DO NOT MERGE]Skip the test DocumentsUI with UiAutomator on Wear.

The cts testDownload_onMediaStoreDownloadsDeleted assumes that
a DocumentsUI exists on all Android devices and tries to interact
with one via UI Automation.

On Wear, there is no DocumentsUI, so that skip this test on Wear.

Bug: 306578198
Test: atest-src CtsAppTestCases:DownloadManagerTest#testDownload_onMediaStoreDownloadsDeleted
Change-Id: Ia88e3831c62b2920df73ee1fca5ca5b4b80ba6ab

Author: Ankit Verma

tests/app/src/android/app/cts/DownloadManagerTest.java

@@ -19,6 +19,7 @@
 import static android.content.pm.PackageManager.PERMISSION_DENIED;
 import static android.content.pm.PackageManager.PERMISSION_GRANTED;
 import static android.content.pm.PackageManager.FEATURE_AUTOMOTIVE;
+import static android.content.pm.PackageManager.FEATURE_WATCH;
 
 import static com.android.compatibility.common.util.SystemUtil.runShellCommand;
 
@@ -728,9 +729,9 @@ public void testDownload_mediaScanned() throws Exception {
     public void testDownload_onMediaStoreDownloadsDeleted() throws Exception {
         final PackageManager pm = mContext.getPackageManager();
 
-        // skip this test for automotive devices which uses FrameworkPackageStubs for
+        // skip this test for automotive and wearable devices which uses FrameworkPackageStubs for
         // a fake DocumentsUI package.
-        assumeFalse(pm.hasSystemFeature(FEATURE_AUTOMOTIVE));
+        assumeFalse(pm.hasSystemFeature(FEATURE_AUTOMOTIVE) || pm.hasSystemFeature(FEATURE_WATCH));
 
         // setup for activity
         GetResultActivity activity = setUpForActivity();