TrackDeleteService can be a JobIntentService (rather than ForegroundService).

Android 14 requires ForegroundService to have a reason.

Fixes  #1657.

src/main/java/de/dennisguse/opentracks/TrackStoppedActivity.java

@@ -158,7 +158,7 @@ public class TrackStoppedActivity extends AbstractTrackDeleteActivity implements
     }
 
     @Override
-    protected void onDeleteFinished() {
+    public void onDeleteFinished() {
         finish();
     }