HarmonyOS 鸿蒙Next中软键盘弹起来时，Scroll为什么自动扩展了安全区域

https://developer.huawei.com/consumer/cn/doc/harmonyos-references-V5/ts-universal-attributes-expand-safe-area-V5#setkeyboardavoidmode11

设置虚拟键盘避让模式 setKeyboardAvoidMode，代码参考

import { KeyboardAvoidMode } from '@kit.ArkUI';

@Component
struct Index3 {
  private list: string[] = []
  private scroller = new Scroller()
  aboutToAppear(): void {
    for (let i = 0; i < 200; i++) {
      this.list.push(`选项${i}`)
    }
    this.getUIContext().setKeyboardAvoidMode(KeyboardAvoidMode.RESIZE)
  }

  build() {
    Column () {
      Text('我是固定标题')
        .fontColor(Color.White)
        .backgroundColor(Color.Red)

      List({ scroller: this.scroller, initialIndex: this.list.length - 1 }) {
        ForEach(this.list, (item: string) => {
          ListItem () {
            Text(item).padding(10)
          }
        })
      }
      .layoutWeight(1)
      TextInput()
    }
    .height('100%')
    .width('100%')
  }
}