Move CarServiceHelperService (again)

Move CarServiceHelperService.java and ICarServiceHelper.aidl from
frameworks/base to frameworks/opt/car/services.

Bug: 72571496
Test: Complies and runs
Change-Id: I0f09c84e25a372dab3f170bd623f25a92f9b0f73
diff --git a/services/java/com/android/server/SystemServer.java b/services/java/com/android/server/SystemServer.java
index 3210f1a..c361434 100644
--- a/services/java/com/android/server/SystemServer.java
+++ b/services/java/com/android/server/SystemServer.java
@@ -65,7 +65,6 @@
 import com.android.server.audio.AudioService;
 import com.android.server.broadcastradio.BroadcastRadioService;
 import com.android.server.camera.CameraServiceProxy;
-import com.android.server.car.CarServiceHelperService;
 import com.android.server.clipboard.ClipboardService;
 import com.android.server.connectivity.IpConnectivityMetrics;
 import com.android.server.coverage.CoverageService;
@@ -220,6 +219,8 @@
             "com.google.android.things.services.IoTSystemService";
     private static final String SLICE_MANAGER_SERVICE_CLASS =
             "com.android.server.slice.SliceManagerService$Lifecycle";
+    private static final String CAR_SERVICE_HELPER_SERVICE_CLASS =
+            "com.android.internal.car.CarServiceHelperService";
 
     private static final String PERSISTENT_DATA_BLOCK_PROP = "ro.frp.pst";
 
@@ -1750,7 +1751,7 @@
 
             if (mPackageManager.hasSystemFeature(PackageManager.FEATURE_AUTOMOTIVE)) {
                 traceBeginAndSlog("StartCarServiceHelperService");
-                mSystemServiceManager.startService(CarServiceHelperService.class);
+                mSystemServiceManager.startService(CAR_SERVICE_HELPER_SERVICE_CLASS);
                 traceEnd();
             }