Add proper annotation to CommunalManager since it requires the Communal

package android.app.communal;

import android.Manifest;

import android.annotation.RequiresFeature;

import android.annotation.RequiresPermission;

import android.annotation.SystemService;

import android.compat.annotation.ChangeId;

import android.compat.annotation.Disabled;

import android.compat.annotation.Overridable;

import android.content.Context;

import android.content.pm.PackageManager;

import android.os.RemoteException;

/**

 * @hide

 */

@SystemService(Context.COMMUNAL_MANAGER_SERVICE)

@RequiresFeature(PackageManager.FEATURE_COMMUNAL_MODE)

public final class CommunalManager {

    private final ICommunalManager mService;