fix: scrollview 滚动节流

Author: zhuqingan.3

packages/taro-components/src/components/scroll-view/readme.md

@@ -25,13 +25,15 @@
 | Property                    | Attribute                    | Description | Type                                        | Default     |
 | --------------------------- | ---------------------------- | ----------- | ------------------------------------------- | ----------- |
 | `animated`                  | `scroll-with-animation`      |             | `boolean`                                   | `false`     |
+| `enhanced`                  | `enhanced`                   |             | `boolean`                                   | `false`     |
 | `lowerThreshold`            | `lower-threshold`            |             | `number \| string`                          | `50`        |
 | `mpScrollIntoView`          | `scroll-into-view`           |             | `string`                                    | `undefined` |
 | `mpScrollIntoViewAlignment` | `scroll-into-view-alignment` |             | `"center" \| "end" \| "nearest" \| "start"` | `undefined` |
 | `mpScrollLeft`              | `scroll-left`                |             | `number \| string`                          | `undefined` |
 | `mpScrollTop`               | `scroll-top`                 |             | `number \| string`                          | `undefined` |
 | `scrollX`                   | `scroll-x`                   |             | `boolean`                                   | `false`     |
 | `scrollY`                   | `scroll-y`                   |             | `boolean`                                   | `false`     |
+| `showScrollbar`             | `show-scrollbar`             |             | `boolean`                                   | `true`      |
 | `upperThreshold`            | `upper-threshold`            |             | `number \| string`                          | `50`        |
 
 

packages/taro-components/src/components/scroll-view/scroll-view.tsx

@@ -1,7 +1,7 @@
 import { Component, ComponentInterface, Element, Event, EventEmitter, Host, Listen, Method, Prop, Watch, h } from '@stencil/core'
 import classNames from 'classnames'
 
-import { debounce, handleStencilNodes } from '../../utils'
+import { throttle, handleStencilNodes } from '../../utils'
 
 import type { ScrollViewContext } from '@tarojs/taro'
 
@@ -171,7 +171,7 @@ export class ScrollView implements ComponentInterface {
     })
   }
 
-  upperAndLower = debounce(() => {
+  upperAndLower = throttle(() => {
     const {
       offsetWidth,
       offsetHeight,