[Security Report] Fix Settings WifiScanModeActivity Overlaid issue am: 05d6fa9bcb am: f71502fb10

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Settings/+/13468308

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I1acaa4a03d9f40baa0a8382e40d31c00b5154465

src/com/android/settings/wifi/WifiScanModeActivity.java

@@ -25,6 +25,7 @@ import android.content.pm.PackageManager;
 import android.net.wifi.WifiManager;
 import android.os.Bundle;
 import android.text.TextUtils;
+import android.view.WindowManager;
 
 import androidx.appcompat.app.AlertDialog;
 import androidx.fragment.app.DialogFragment;
@@ -43,6 +44,8 @@ public class WifiScanModeActivity extends FragmentActivity {
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
+        getWindow().addSystemFlags(
+                WindowManager.LayoutParams.SYSTEM_FLAG_HIDE_NON_SYSTEM_OVERLAY_WINDOWS);
         Intent intent = getIntent();
         if (savedInstanceState == null) {
             if (intent != null && WifiManager.ACTION_REQUEST_SCAN_ALWAYS_AVAILABLE