[Safer intents] Settings misc

To avoid implicit intents, make intents launch explicitly.

Test: build
Bug: 323061508
Change-Id: Ie19cbceb89842a75a180898abcce81b63c18d46c

src/com/android/settings/users/UserSettings.java

@@ -555,7 +555,8 @@ public class UserSettings extends SettingsPreferenceFragment
     }
 
     private void launchChooseLockscreen() {
-        Intent chooseLockIntent = new Intent(DevicePolicyManager.ACTION_SET_NEW_PASSWORD);
+        Intent chooseLockIntent = new Intent(DevicePolicyManager.ACTION_SET_NEW_PASSWORD)
+                .setPackage(getContext().getPackageName());
         chooseLockIntent.putExtra(ChooseLockGeneric.ChooseLockGenericFragment.HIDE_INSECURE_OPTIONS,
                 true);
         startActivityForResult(chooseLockIntent, REQUEST_CHOOSE_LOCK);