这里有一个使用PHP而不是JS方法的解决方案。（我无法用JS取得任何进展）。

这段代码将用一个新的操作替换WP的垃圾操作，该操作只会垃圾掉评论并重新加载页面。

/**
 * Replace the Trash action in the comment list with a link that will trash the comment and reload the page.
 *
 * @see https://wordpress.stackexchange.com/questions/268236/edit-comments-php-comment-row-actions-ajax-problem
 *
 * @param array      $actions
 * @param WP_Comment $comment
 *
 * @return array Comment actions
 */
function wpse_comment_row_actions( $actions, $comment ) {

    // Don\'t do anything for comments that are already in the trash or marked as spam.
    // You may want to customize this behavior.
    if (
        \'trash\' === $comment->comment_approved ||
        \'spam\' === $comment->comment_approved ) {
        return $actions;
    }

    // Remove WP\'s Trash action.
    if ( isset( $actions[\'trash\'] ) ) {
        unset( $actions[\'trash\'] );
    }

    $screen = get_current_screen();

    $args = [
        \'comment_id\' => $comment->comment_ID,
        \'action\'     => \'trash_comment_and_reload\',
        \'_wpnonce\'   => wp_create_nonce( \'do-comment-action-and-reload\' ),
        \'referer\'    => $screen->parent_file,
    ];

    // Add args so that we redirect to the same tab that the user was on.
    if ( ! empty( $_REQUEST[\'comment_status\'] ) ) {
        $args[\'comment_status\'] = $_REQUEST[\'comment_status\'];
    }

    if ( ! empty( $_REQUEST[\'user_id\'] ) ) {
        $args[\'user_id\'] = $_REQUEST[\'user_id\'];
    }

    $link = esc_url(
        add_query_arg(
            $args,
            admin_url( \'admin-ajax.php\' )
        )
    );

    // Add our own Trash action.
    $actions[\'trash_and_reload\'] = sprintf(
        \'<a href="%s" style="color:#b32d2e" class="delete">Trash</a>\',
        $link
    );

    return $actions;
}
add_filter( \'comment_row_actions\', \'wpse_comment_row_actions\', 10, 2 );

/**
 * Trash comment and reload the page.
 */
function wpse_trash_comment_and_reload() {
    if ( wp_verify_nonce( $_REQUEST[\'_wpnonce\'], \'do-comment-action-and-reload\' ) ) {
        wp_trash_comment( $_REQUEST[\'comment_id\'] );

        $args = [];
        if ( ! empty( $_REQUEST[\'comment_status\'] ) ) {
            $args[\'comment_status\'] = $_REQUEST[\'comment_status\'];
        }

        if ( ! empty( $_REQUEST[\'user_id\'] ) ) {
            $args[\'user_id\'] = $_REQUEST[\'user_id\'];
        }

        wp_safe_redirect(
            add_query_arg(
                $args,
                admin_url( $_REQUEST[\'referer\'] )
            )
        );
    }

    exit;
}
add_action( \'wp_ajax_trash_comment_and_reload\', \'wpse_trash_comment_and_reload\' );