Show download button if a download fails immediately

If the download fails without downloading any data, treat it as a
new file.

src/org/lineageos/updater/UpdatesListAdapter.java

@@ -213,11 +213,13 @@ public class UpdatesListAdapter extends RecyclerView.Adapter<UpdatesListAdapter.
             case INSTALLING:
             case VERIFYING:
             case STARTING:
-            case PAUSED:
             case DOWNLOADED:
-            case PAUSED_ERROR:
                 activeLayout = update.getPersistentStatus() != UpdateStatus.Persistent.VERIFIED;
                 break;
+            case PAUSED:
+            case PAUSED_ERROR:
+                activeLayout = update.getFile() != null && update.getFile().exists();
+                break;
             default:
                 activeLayout = false;
         }