Fix test dependencies for AppEnumerationInternalTests

All of a test's dependencies should be explicitly declared in the Soong build module to enable infrastructure features that ensure correctness and optimize runtime. Here in the test config file, AppEnumerationInternalTests uses `AppEnumerationSyncProviderTestApp.apk`, so that this change declares `AppEnumerationSyncProviderTestApp` in the Soong build module.

Besides, this change modifies the test config file by switching to use `PushFilePreparer` instead of `FilePusher`, since `FilePusher` is designed for the tests that are part of compatibility suite and AppEnumerationInternalTests is not.

Bug: 222438068
Test: atest-src AppEnumerationInternalTests \
          --experimental-device-driven-test \
          --experimental-java-runtime-dependencies \
          --bazel-arg=--test_timeout=48000
Test: atest AppEnumerationInternalTests
Change-Id: I8f09efe82b8dbd11d900752c3810d9215026062e

services/tests/PackageManagerServiceTests/appenumeration/Android.bp

@@ -33,4 +33,5 @@ android_test {
     ],
     platform_apis: true,
     test_suites: ["device-tests"],
+    data: [":AppEnumerationSyncProviderTestApp"],
 }

services/tests/PackageManagerServiceTests/appenumeration/AndroidTest.xml

@@ -30,7 +30,7 @@
     </target_preparer>
 
     <!-- Load additional APKs onto device -->
-    <target_preparer class="com.android.compatibility.common.tradefed.targetprep.FilePusher">
+    <target_preparer class="com.android.tradefed.targetprep.PushFilePreparer">
         <option name="push" value="AppEnumerationSyncProviderTestApp.apk->/data/local/tmp/appenumerationtests/AppEnumerationSyncProviderTestApp.apk" />
     </target_preparer>