[Settings] Adjusts the result code to cancel when complete redaction interstitial setting

This change can make redaction interstitial can be setup repeatedly in anything else page.

Test: manual
Bug: 185430009
Change-Id: I7ed459ca3017286ab01bc8274704dd01fc50391d

src/com/android/settings/notification/RedactionInterstitial.java

@@ -153,7 +153,7 @@ public class RedactionInterstitial extends SettingsActivity {
             }
             final RedactionInterstitial activity = (RedactionInterstitial) getActivity();
             if (activity != null) {
-                activity.setResult(RESULT_OK, null);
+                activity.setResult(RESULT_CANCELED, null);
                 finish();
             }
         }