我在Laravel Nova的ContactUs资源中，尝试通过afterDelete钩子返回自定义删除成功提示，但执行删除操作后完全看不到设置的"Contact Us entry deleted successfully."消息。更奇怪的是，就算我移除整个afterDelete方法，Nova也不会显示默认的删除确认消息。有没有朋友能帮忙排查下问题所在？

以下是我的ContactUs资源完整代码：

<?php

namespace App\Nova;

use Illuminate\Http\Request;
use Illuminate\Support\Facades\DB;
use Laravel\Nova\Actions\Action;
use Laravel\Nova\Fields\ID;
use Laravel\Nova\Http\Requests\NovaRequest;
use Laravel\Nova\Fields\Text;
use Laravel\Nova\Fields\DateTime;
use Laravel\Nova\Actions\ActionResponse;

class ContactUs extends Resource
{
    /**
     * The model the resource corresponds to.
     *
     * @var class-string<\App\Models\ContactUs>
     */
    public static $model = \App\Models\ContactUs::class;

    /**
     * The single value that should be used to represent the resource when being displayed.
     *
     * @var string
     */
    public function title()
    {
        return $this->first_name . ' ' . $this->last_name;
    }

    /**
     * Get the searchable columns for the resource.
     *
     * @return array
     */
    public static function searchableColumns()
    {
        return ['id', DB::raw("CONCAT(first_name, ' ', last_name)"), 'email', 'phone_no'];
    }

    public static function authorizedToCreate(Request $request)
    {
        return false;
    }

    public function authorizedToUpdate(Request $request): bool
    {
        return false;
    }

    public function authorizedToDelete(Request $request): bool
    {
        return true;
    }

    public function authorizedToReplicate(Request $request): bool
    {
        return false;
    }

    // Hook into the deletion process
    public static function afterDelete(Request $request, $model)
    {
        return ActionResponse::message('Contact Us entry deleted successfully.');
    }

    /**
     * Get the fields displayed by the resource.
     *
     * @return array<int, \Laravel\Nova\Fields\Field>
     */
    public function fields(NovaRequest $request): array
    {
        return [
            Text::make('First Name')->rules('required'),
            Text::make('Last name')->rules('required'),
            Text::make('Email')->rules('required'),
            Text::make('Message', function () {
                return $this->message ?: '<em>No message provided.</em>';
            })->asHtml()->onlyOnDetail(),
            DateTime::make('Created At')
                ->readonly(),
        ];
    }

    public static function label()
    {
        return 'Contact Us';
    }

    public static function singularLabel()
    {
        return 'Contact Us';
    }

    /**
     * Get the cards available for the resource.
     *
     * @return array<int, \Laravel\Nova\Card>
     */
    public function cards(NovaRequest $request): array
    {
        return [];
    }

    /**
     * Get the filters available for the resource.
     *
     * @return array<int, \Laravel\Nova\Filters\Filter>
     */
    public function filters(NovaRequest $request): array
    {
        return [];
    }

    /**
     * Get the lenses available for the resource.
     *
     * @return array<int, \Laravel\Nova\Lenses\Lens>
     */
    public function lenses(NovaRequest $request): array
    {
        return [];
    }

    /**
     * Get the actions available for the resource.
     *
     * @return array<int, \Laravel\Nova\Actions\Action>
     */
    public function actions(NovaRequest $request): array
    {
        return [];
    }
}

我已经确认删除操作能正常执行，数据库里的记录确实被删掉了，就是没有任何提示消息。试过清除缓存、重新登录Nova，问题依然存在。有没有人遇到过类似的情况？或者能指出我代码里的错误？