LSW: Fix backtrack to LineageSettings fragment

The current handling results in the followup activity to ignore it for
backtracks which means when going from Location -> LineageSettings -> Fingerprint
the move backwards from Fingerprint leads up in Location and not the expected
LineageSettings.

The custom handling is necessary to process the result in the Google SUW,
so it has been fixed to properly work now.

Change-Id: Ifae5dc8fda07b61bd0271da1d1589059ab40cd39

src/org/lineageos/setupwizard/LineageSettingsActivity.java

@@ -1,6 +1,6 @@
 /*
  * Copyright (C) 2016 The CyanogenMod Project
- * Copyright (C) 2017-2019 The LineageOS Project
+ * Copyright (C) 2017-2020 The LineageOS Project
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -134,14 +134,9 @@ public class LineageSettingsActivity extends BaseSetupWizardActivity {
     }
 
     @Override
-    public void onNavigateBack() {
-        onBackPressed();
-    }
-
-    @Override
-    public void onNavigateNext() {
+    protected void onNextPressed() {
         Intent intent = WizardManagerHelper.getNextIntent(getIntent(), Activity.RESULT_OK);
-        startActivityForResult(intent, 1);
+        nextAction(NEXT_REQUEST, intent);
     }
 
     @Override