feat：优化我的收藏，全选和取消逻辑

@@ -262,6 +262,8 @@ struct MyCollectionListPage {
       this.selectDatas.splice(0,this.deleteNum)
     }
     this.deleteNum =  this.selectDatas.length
+
+    this.isAllSelect = this.deleteNum === this.allDatas.length?true:false;
   }
 
   //删除

@@ -28,8 +28,7 @@ export struct CustomBottomFuctionUI {
         left: {anchor: "__container__", align: HorizontalAlign.Start}
       })
       .onClick(()=>{
-        this.isAllSelect = !this.isAllSelect;
-        this.selectAllCallback(this.isAllSelect)
+        this.selectAllCallback(this.isAllSelect?false:true)
       })