taskPool方法中调用napi接口报错

### 该问题是怎么引起的？
    主要适用场景用于在lib module中处理耗时任务，这个时候就需要用到taskpool方法，
如果在function中处理耗时，不涉及napi是没有问题的；
如果在function中需要调用napi的方法，那么就会报错 is not called，找不到napi的方法，napi方法不在taskpool中调用是没有问题的；
    
### 重现步骤
1. 打开simple中的native项目
2. 编译项目，使得项目可以正常运行
3. 修改index.ets文件内容，文件内容在文末；index文件：Native/entry/src/main/ets/pages/Index.ets
4. 菜单：build→build haps/apps→build apps
5. 打开as导入.akui-x中的android项目
6. 安装到Android手机上运行，即可复现问题
    
### 报错信息
    
    napi接口调用报错: is not called

index.ets源码：

```
/*
 * Copyright (c) 2023 Huawei Device Co., Ltd.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import testNapi from 'libentry.so';
import taskpool from '@ohos.taskpool';

@Concurrent
async function normalTask(a: number, b: number): Promise<number> {
  return a + b
}

@Concurrent
async function napiTest(a: number, b: number): Promise<number> {
  console.log("taskPool Result 2");
  const addRes = testNapi.add(a, b)
  console.log("taskPool Result s" + addRes);
  return addRes
}

@Entry
@Component
struct Index {
  @State message: string = 'Test native api: 2 + 3 = ?'
  @State message2: string = 'Click me'
  @State taskNormal: string = 'taskPool Result normal : 5 + 6 = ?'
  @State taskNapi: string = 'taskPool Result : 5 + 6 = ?'

build() {
    Row() {
      Column() {
        Text(this.message)
          .fontSize(20)
          .fontWeight(FontWeight.Bold)
          .alignSelf(ItemAlign.Start)
          .margin({ left: 5 })
          .onClick(() => {
            this.message = "Test native api: 2 + 3 = " + testNapi.add(2, 3);
            console.log("Test NAPI 2 + 3 = " + testNapi.add(2, 3));
          })

Text(this.message2)
          .fontSize(20)
          .alignSelf(ItemAlign.Start)
          .margin({ top: 20, left: 5 })
          .fontWeight(FontWeight.Bold)
          .onClick(() => {
            this.message2 = testNapi.nativeCallArkTS((a: string) => {
              return a + " world!";
            });
            console.log(this.message2);
          })

Text(this.taskNormal)
          .fontSize(20)
          .alignSelf(ItemAlign.Start)
          .margin({ top: 20, left: 5 })
          .fontWeight(FontWeight.Bold)
          .onClick(async () => {
            const result = await taskpool.execute(normalTask, 5, 6) as number
            this.taskNormal = 'taskPool Result normal : 5 + 6 = ' + result
            console.log(this.taskNormal);
          })

Text(this.taskNapi)
          .fontSize(20)
          .alignSelf(ItemAlign.Start)
          .margin({ top: 20, left: 5 })
          .fontWeight(FontWeight.Bold)
          .onClick(async () => {
            console.log("taskPool Result 1");
            taskpool.execute(napiTest, 5, 6).then((result: number) => {
              console.log("taskPool Result 3");
              this.taskNapi = 'taskPool Result : 5 + 6 = ' + result
              console.log(this.taskNapi);
            }).catch((reason: Error) => {
              console.log("taskPool Result exception : " + reason.message);
            })
          })
      }
      .width('100%')
    }
    .height('100%')
  }
}
```

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