feat：优化下拉刷新展示

 import lottie, { AnimationItem } from '@ohos/lottie';
+import { RefreshConstants } from '../../utils/RefreshConstants';
 import { LoadStatus, RefreshLayoutBean } from './RefreshLayoutBean';
 
 /**
@@ -122,8 +123,7 @@ export default struct CustomLayout {
     if (!this.refreshBean.isVisible) {
       return
     }
-    let maxH = CustomLayout.REFRESH_HEIGHT
-    let tmpHeight = this.refreshBean.offset > maxH ? maxH : this.refreshBean.offset
+
     if (this.refreshBean.loadStatus === LoadStatus.PRELOAD) {
       // 下拉刷新
       this.animate1(this.refreshBean.offset)
@@ -132,19 +132,16 @@ export default struct CustomLayout {
       this.animate2()
     }else if (this.refreshBean.loadStatus == LoadStatus.GOLOADED) {
       this.textVisible = true
-      if (tmpHeight <= 0) {
-        setTimeout(() => {
-          // 延时设置0，让“已更新到最新”展示
-          this.textVisible = false
-          this.setHeight0WithAnimation()
-        }, 800)
-      }
-
     } else {
       // 刷新完成
       !!this.animateItem && lottie.destroy(this.animateName)
       !!this.animateItem2 && lottie.destroy(this.animateName2)
+
+      this.textVisible = false
+      this.setHeight0WithAnimation()
     }
+    let maxH = CustomLayout.REFRESH_HEIGHT
+    let tmpHeight = this.refreshBean.offset > maxH ? maxH : this.refreshBean.offset
     if (this.refreshBean.loadStatus === LoadStatus.LOADED) {
 
     } else {
@@ -159,7 +156,7 @@ export default struct CustomLayout {
   setHeight0WithAnimation() {
     // this.layoutHeight = 0
     animateTo({
-      duration: 500, // 动画时长
+      duration: 300, // 动画时长
       curve: Curve.Linear, // 动画曲线
       iterations: 1, // 播放次数
       playMode: PlayMode.Normal, // 动画模式