Merge "Don't show back arrow in Security when in split mode." into tm-dev am: e22fa138aa

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Settings/+/17940206

Change-Id: I6b8ae6593ba12751b4eb2be7cea75256e18638a9
Ignore-AOSP-First: this is an automerge
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>

src/com/android/settings/security/TopLevelSecurityEntryPreferenceController.java

@@ -58,6 +58,7 @@ public class TopLevelSecurityEntryPreferenceController extends BasePreferenceCon
                 new SubSettingLauncher(mContext)
                         .setDestination(alternativeFragmentClassname)
                         .setSourceMetricsCategory(getMetricsCategory())
+                        .setIsSecondLayerPage(true)
                         .launch();
                 return true;
             }