HarmonyOS鸿蒙Next中m3u8视频文件有几百个片段，让用户选几百个片段不合理，有没有workaround的方法来解决这个问题

尊敬的开发者您好，您可参考以下方案：

可以全选到m3u8格式文件

示例代码：

import { picker } from "@kit.CoreFileKit";
import { common } from "@kit.AbilityKit";
import { BusinessError } from "@kit.BasicServicesKit";

@Entry
@Component
struct Index {
  private context = this.getUIContext().getHostContext() as common.UIAbilityContext;

  build() {
    Column({space:6}){
      Text("选择m3u8文件")
        .fontSize(50)
        .fontWeight(FontWeight.Bold)
        .onClick(()=>{
          try {
            let documentSelectOptions = new picker.DocumentSelectOptions();
            // 指定选择目录的URI（根据 m3u8 路径推断视频文件夹）
            documentSelectOptions.defaultFilePathUri = 'file://docs/storage/Users/currentUser/Download/test';
            documentSelectOptions.fileSuffixFilters = ['.m3u8'];
            let documentPicker = new picker.DocumentViewPicker(this.context);
            documentPicker.select(documentSelectOptions).then((documentSelectResult: Array<string>) => {
              console.info('DocumentViewPicker.select successfully, documentSelectResult uri: ' + JSON.stringify(documentSelectResult));
            }).catch((err: BusinessError) => {
              console.error(`DocumentViewPicker.select failed with err, code is: ${err.code}, message is: ${err.message}`);
            });
          } catch (error) {
            let err: BusinessError = error as BusinessError;
            console.error(`DocumentViewPicker failed with err, code is: ${err.code}, message is: ${err.message}`);
          }
        })
    }
  }
}