feat: avoid layouts thrashing #3764
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🚅 Deployed to the core-pr-3764 environment in core
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Background or solution
当我们在获取浏览器的布局时，如果当前有未应用的布局，浏览器会强制应用该布局。
所以我们其实不太需要每一次都获取最新的布局，仅获取上一帧的布局信息即可。
使用一个工具包 fastdom 来做到这一点。
这是因为 monaco 监听了自身的 dom 变化（有个配置项），再 layout 自己，关掉这一项，由外层来 layout 它即可
Changelog
avoid layouts thrashing