fix: correct RightFloatArea hiding behavior when scrolling back to top #3355
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已知问题
Fixes #3354
解决方案
requestAnimationFrame
优化滚动事件处理性能改动收益
requestAnimationFrame
与浏览器渲染周期同步,提高流畅度具体改动
/themes/hexo/components/RightFloatArea.js
测试确认