Merge "Fix build error when updating Wm Extensions prebuilt" into main

        if (activities == null) {

            return null;

        }

        return new ActivityStack(activities, isEmpty(), mToken);

        // Already checked nullity in collectNonFinishingActivities.

        final Rect bounds = getInfo().getConfiguration().windowConfiguration.getBounds();

        return new ActivityStack(activities, isEmpty(), mToken, bounds, mOverlayTag);

    }

    /** Adds the activity that will be reparented to this container. */