HarmonyOS H5执行文本框获取焦点，但web内不自动打开键盘

参考示例如下

import { webview } from '@kit.ArkWeb';
import { inputMethod } from '@kit.IMEKit';
import { BusinessError } from '@kit.BasicServicesKit';

let inputMethodController = inputMethod.getController();
@Entry
@Component
struct WebComponent {
  controller: webview.WebviewController = new webview.WebviewController();
  aboutToAppear(): void {
    webview.WebviewController.setWebDebuggingAccess(true)
    try {
      let textConfig: inputMethod.TextConfig = {
        inputAttribute: {
          textInputType: 0,
          enterKeyType: 1
        }
      };
      inputMethodController.attach(true, textConfig, (err: BusinessError) => {
        if (err) {
          console.error(`Failed to attach: ${JSON.stringify(err)}`);
          return;
        }
        console.log('Succeeded in attaching the inputMethod.');
      });
    } catch(err) {
      console.error(`Failed to attach: ${JSON.stringify(err)}`);
    }
  }
  build() {
    Scroll() {
      Column() {
        Web({
          src: $rawfile('demo.html'),
          controller: this.controller,
        })
          .onPageVisible(() => {
            inputMethodController.showTextInput().then(() => {
              console.log('Succeeded in showing text input.');
            }).catch((err: BusinessError) => {
              console.error(`Failed to showTextInput: ${JSON.stringify(err)}`);
            });
          })
          .domStorageAccess(true)
          .height('100%')
      }
    }
  }
}